Change the proper fraction into percent
Percent means per hundred, so we should change the denominator into 100
First, I change the denominator to 1,000, multiply the numerator and denominator by 125
= 3/8 × 125/125
= 375/1,000
Second, I change the denominator to 100, divide the fraction above by 10
= 375/1,000 ÷ 10/10
= 37.5/100
= 37.5%
The answer is option D