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Bubr Posted 23 years ago
Jokes, Puzzles & Riddles
40 people
This is quite simple. It's from a junior school math book, but many adults stumble over it.
There are 40 people in a room. 28 are drinking tea, 15 are watching TV and 7 are doing nothing.. How many people are both watching TV and drinking tea?
There are 40 people in a room. 28 are drinking tea, 15 are watching TV and 7 are doing nothing.. How many people are both watching TV and drinking tea?
Top answer
That's a terrible one for a Friday night: 13? I coudn't find my calculator.
- That's a terrible one for a Friday night: 13?
- I coudn't find my calculator.
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13 Answers
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That's a terrible one for a Friday night: 13? I coudn't find my calculator.
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Sorry, wrong again! Don't worry, I discovered I had problems with this kind of junior school math, too
Having graduated from a techn
Having graduated from a techn00
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May I suggest a hint first? Start with subtracting the number of truants from the whole number to get thirty three.
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Just tell me the answer. I'd like to work out the rest by myself if you don't mind.
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Hi, I'm a new user and not very good at English but anyway I'm trying to give my explaination for this:
There are 7 people doing nothing, so 33 (=40-7) people drinking/watching/both.
There are 28 people drinking tea, so 5 (=33-28) not drinking tea
There are 15 people watching TV (they may drink or not), so 10 (=15-5) people must be both drinking and watching tv.
Is it right?
There are 7 people doing nothing, so 33 (=40-7) people drinking/watching/both.
There are 28 people drinking tea, so 5 (=33-28) not drinking tea
There are 15 people watching TV (they may drink or not), so 10 (=15-5) people must be both drinking and watching tv.
Is it right?
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Hi linhlinh!
Your explanation is exellent, and, in my oppinion, there is no need for you to doubt about your English. I am not a native English speaker, either, so my messages may contain some mistakes or misspellings. However, I don't worry much about them because if people can understand me, I consider this enough (and your English is quite understandable!). The most important thing i
Your explanation is exellent, and, in my oppinion, there is no need for you to doubt about your English. I am not a native English speaker, either, so my messages may contain some mistakes or misspellings. However, I don't worry much about them because if people can understand me, I consider this enough (and your English is quite understandable!). The most important thing i
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