Question

If 100% of a number is 15, then what is 50% of the number?

Answer 1

7.5

Explanation:

One way in which you could do this problem would be to write and solve an equation of ratios:

100% 15

--------- = ----------

50% x

Cross multipying results in 100x = 750, so that x = 7.5.

50% of the number is 7.5.

Answer 2

The answer is 7.5.

Explanation:

Since we're looking for half of 15, divide 15 by 2 (or multiply 15 by 0.5, it's the same thing) and you get 7.5.

I hope this helped! :)