two questions involving percents and whole numbers? pre algebra

label Algebra
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schedule 1 Day
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A.) 65% of what is 39?

B.)  what number is 15% of 80?

Aug 2nd, 2015

A.) 65% of what is 39?

65% of x = 39

65/100 * x = 39

x = 39 * 100/65

x = 60

So 65% of 60 is 39.

B.)  what number is 15% of 80?

15% of 80

= 15/100 * 80

= 1200/100

= 12

15% of 80 is 12.

Aug 2nd, 2015

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