Often, we find something old and get engrossed in it for hours. Similar is the case of Henry, who found an interesting set of mathematical puzzles in his school diary. Can you help him solve these math puzzles?
When was the last time you cleaned your room and closet? No, we’re not trying to teach you a lesson or two about cleanliness, tidiness, and space management. This is just a harmless question we were going to ask you. When was the last time you actually cleaned your room?
Well, cleaning a room is a tiring job, but the fun part is that sometimes you can turn on your favorite music and dance your heart out with the dusty decorations in the room while cleaning them. Another interesting thing about housekeeping that doesn’t happen all the time, but only on days when we’re lucky, is that we might find something so old that we forgot it ever existed. life.
So what feelings do things from our past erode? Well, that’s a difficult question to answer. While all of these certainly give rise to strangely bittersweet feelings, some may make you wonder why you found them. For example, a rose given to you by someone you love but is not with you today can make you reminisce first about the beautiful memories you shared with them and then about the sad ending. However, on the other hand, in case you find something from your childhood, such as your favorite toy, your most loved Barbie doll, a bracelet given to you by your childhood friend for you, your favorite bedsheet or your childhood clothes, the very glimpse of these objects will bring a bright smile and a feeling of excitement to your face. That’s the nature of old memories!
Well, while searching for old objects can mostly evoke good or bad memories, sometimes, some objects trick us for hours. This is what happened to Henry today. Let’s find out.
Henry, school diary and math quizzes- STORY TIME!
Henry is a 25-year-old software engineer who works in a reputable company and earns a fairly high salary. Throughout his life, he was extremely hardworking and achieved great academic success. When he was in school, he was one of the students loved by his teachers. However, in his school’s elementary standards, he struggled a lot to manage math as a subject. Who cares? He worked hard on the subject, honed his skills and today has become a successful software engineer!
Well, that’s not the point we’re trying to make. Today, when he decided to clean out his locker, he accidentally found a diary with the name of his school written on it. When he opened it, he saw his name written on it in childish handwriting.
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Everything was fine until now until he turned the page. On the first page, he found a sketch of his favorite cartoon from childhood. Henry was definitely good at sketching in school, but can’t remember exactly when he drew this sketch. On the second page, the guy found some random scribbles that he didn’t pay attention to. On the third page there is something really interesting but also surprising.
On the third page it says,
“Whether I was 10 or 25 years old, I would still never be able to solve these HARD math puzzles.”
The words shocked Henry. Maybe when he wrote this quote, he could have been a 10 year old kid. However, does this mean that 10-year-old Henry actually challenged present-day Henry first? This may sound strange and even a little terrifying!
Henry immediately turned the page and found some mathematical puzzles written down.
Now, the super smart guy is a little worried because his younger self suddenly challenged him. Can you help Henry solve these math puzzles?
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Math puzzle in Henry’s diary:
Math puzzle 1:
Liam asked his father for $50 and his mother for $50, and his parents gave him the requested amount. Now, this means he has $100. With this money, he went to a store and bought a blazer worth $97. Now, with the remaining $3, Liam gives $1 to his dad and $1 to his mom, while keeping $1 for himself. This means Liam owes his dad $49 and his mom $49, which adds up to $98. Now, the $1 he keeps is $99. Where did the remaining dollars go?
Math puzzle 2:
Susan installed a new set of faucets in the house. However, the speeds of the two nozzles are different. The hot water faucet that Susan installed fills the bathtub at a specific rate of 15 liters per minute. On the other hand, the cold faucet in Susan’s bathtub lets water flow in at a specific rate of 10 liters per minute. If we talk about the plug hole, then it also allows water to leave the bath at a specific rate of 12 liters per minute.
Now, the bathtub can hold a maximum of 520 liters.
If one fine day, Susan turns on both the hot and cold faucets, but somehow forgets to put the plug in, how many minutes will it take for the bathtub to actually overflow?
(PS: Don’t be careless like Susan and always try to save water!)
Math puzzle 3:
When Gracy was 6 years old, her brother John was actually half her age. If Gracy cuts her 50th birthday cake today, how old do you think her brother is?
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After solving the third math puzzle, Henry accidentally turned a few more pages with random scribbles, until when he reached the last page, he found something even more strange.
The last page reads:
“Answer for 25-year-old Henry.”
This statement was written by 10-year-old Henry in childish handwriting. Following the statement are the answers to the math puzzles
“Answer for 25 year old Henry”
Math puzzle 1:
Liam asked his father for $50 and his mother for $50, and his parents gave him the requested amount. Now, this means he has $100. With this money, he went to a store and bought a blazer worth $97. Now, with the remaining $3, Liam gives $1 to his dad and $1 to his mom, while keeping $1 for himself. This means Liam owes his dad $49 and his mom $49, which adds up to $98. Now, the $1 he keeps is $99. Where did the remaining dollars go?
Answer 1:
What’s worth noting here is that there are actually no missing dollars! Liam started with $100. He then spent $97 on the blazer. After buying the blazer, he had $3 left. Then the boy gave 1 dollar to his father and 1 dollar to his mother and kept 1 dollar for himself. This means Liam owes his parents $98, but since he kept $1 for himself, it can be counted toward the amount Liam owes them.
Therefore, the boy needs an additional 97 USD (the price of the jacket) to pay his parents.
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Math puzzle 2:
Susan installed a new set of faucets in the house. However, the speeds of the two nozzles are different. The hot water faucet that Susan installed fills the bathtub at a specific rate of 15 liters per minute. On the other hand, the cold faucet in Susan’s bathtub lets water flow in at a specific rate of 10 liters per minute. If we talk about the plug hole, then it also allows water to leave the bath at a specific rate of 12 liters per minute.
Now, the bathtub can hold a maximum of 520 liters.
If one fine day, Susan turns on both the hot and cold faucets, but somehow forgets to put the plug in, how many minutes will it take for the bathtub to actually overflow?
(PS: Don’t be careless like Susan and always try to save water!)
Answer 2:
The answer is 40 minutes.
EXPLANATION: A hot water tap can fill a bathtub at a rate of 15 liters per minute. On the other hand, cold taps can fill a bathtub at a rate of 10 liters per minute.
Now, water enters at a rate of 25 liters per minute. (How? Well, 15 plus 10 is 25.)
Furthermore, the plug can drain water at a rate of 12 liters per minute.
Thus, the bathtub fills at a rate of 13 liters per minute. (How? Well, 12 minus 25 is 13.)
Now the bathtub holds 520 liters of water.
Thus, because 520 divided by 13 equals 40, the bathtub will overflow after 40 minutes.
Math Riddle 3: When Gracy was 6 years old, her brother John was actually half her age. If Gracy cuts her 50th birthday cake today, how old do you think her brother is?
Answer 3:
John is 47 years old this year.
When Gracy was 6, John was 3. This didn’t just mean that John was half her age. This also means that John is 3 years younger than Gracy.
Now, when Gracy is 50 years old and John is three years younger than his sister, he must be 47 years old today.Can you help Henry solve these strange math puzzles?
And why did young Henry leave these math puzzles for today’s 25-year-old Henry to solve? Now this sounds scary. While the math puzzles are really fun, it’s better to leave some mysteries unsolved. It seems that today Henry completed an unfinished task that his mini version left him to complete many years ago.
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Categories: Optical Illusion
Source: pagasa.edu.vn