ASVAB Question of the Week: May 7, 2014

Here is an ASVAB study question for this week - don't forget about all our other study and ASVAB resources over at http://army.com/info/asvab/general!

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Answer!

To multiply fractions, the standard way is to multiply all the numerators (top numbers) and multiple all the denominators (bottom numbers) and then reduce it, if necessary.

For this problem that would be:
8 x 1 x 5 x 2 = 80

9 x 2 x 8 x 5 = 720

and 80/720 reduces down to 1/9 - B.

In this case, there is also a shortcut. When multiplying fractions if a numerator and denominator are the same number, they can be cancelled out, and you only need to worry about the numbers that are left. In this case that would make the problem look like this:

8/9 x 1/2 x 5/8 x 2/5

You can see the only number not cancelled out are the 1 and the 9, so you can solve the problem directly to 1/9.