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Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion


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February 7th, 2016, 11:29 AM   #1
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Is this a trick

Quote:
Divide 40 by one and a half and add 10
The answer is 90?

How?
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February 7th, 2016, 11:36 AM   #2
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$40 \div \dfrac{3}{2} + 10 \ne 90$

now, $40 \div \dfrac{1}{2} + 10 = 90$
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February 7th, 2016, 06:05 PM   #3
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You mean it is translated as "divide 40 by one, then by half, and add 10"?
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February 8th, 2016, 09:03 AM   #4
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That is what is suggested. Kiwis, where did you get the "90" from?

40 divided by "one and a half" is 80/3= "26 and 2/3". Then "add 10" is "36 and 2/3".
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February 8th, 2016, 10:24 AM   #5
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Kiwis seems to post these "confusing" problems fairly often;
wonder if he's doing it on purpose...
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February 9th, 2016, 07:21 PM   #6
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Or the question wasn't in English and it's just lost in translation. Didn't I experience similar case before?
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