Exercise 52 Page 156

In the percent proportion, the ratio of the part a to the whole b is equal to the percent p written as a fraction. a/b=p/100 Given any two of these three variables, we can find the third one. In this exercise, we are given the values a= 111 and b= 37. Therefore, we are looking for the percent p.

a/b=p/100

SubstituteII

a= 111, b= 37

111/37=p/100

ReduceFrac

a/b=.a /37./.b /37.

3/1=p/100

CrossMult

Cross multiply

300=p

RearrangeEqn

Rearrange equation

p=300

This means that 111 is 300 % of 37.