Exercise 29 Page 547

We are given that 7 out of every 500 teenage people are vegetarian. To determine how many teenagers in a group of 350 are expected to be vegetarians, we will create a proportion. Let's assume that the ratio of vegetarians to the number of all teenage people is constant. Let x be the number of vegetarians in a group of 350 teenagers. The number of vegetarians/The number of teenagers=7/500=x/350 We will solve the above proportion using Cross Products Property.

7/500=x/350

CrossMult

Cross multiply

7*350= 500* x

Multiply

Multiply

2450=500x

DivEqn

.LHS /500.=.RHS /500.

4.9=x

RearrangeEqn

Rearrange equation

x=4.9

RoundInt

Round to nearest integer

x≈5

We would expect about 5 vegetarians in a group of 350 teenagers.