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20 increased by 200% is:

 a)30

 b)40

 c)50

 d)60

 Oct 16, 2018
 #1
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+1

Ann's computer has a total capacity of 60 GB. At present she is using 39% of the capacity.

How much free space does she have?

 Oct 16, 2018
 #2
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+1

20 x [200/100 +1] = 60, or "d" on your list.

 Oct 16, 2018
 #3
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+1

60 - [39% x 60] =60 - 23.4 =36.6 GB - free space that Ann has.

 Oct 16, 2018

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