Question

Guy wants to swim 500 meters. After 75 meters, he takes a break. What percent of his goal has he already met?

10%
20%
15%
75%

Answer 1

15 % is the right answer. :)

Explanation:

Answer 2

To determine this, we need to set up proportions.
x/100 = 75/500.
A quick way to find x, the percentage we're looking for, is to cross multiply our fractions.
100 x 75 and 500 with x.
75 x100 = 7500, and 500 times x is 500x.
7500=500x
Divide by 500 on each side.
15 = x
Your answer is C.)15%.
I hope this helps!