Exercise 9 Page 546

A recipe Ella is using says she needs to use 2 eggs per 12 muffins, and we want to find the number of eggs she needs to make 108 muffins. Let's create a proportion using the fact that the ratio of eggs to muffins needs to be constant. Let x be the number of eggs. The number of eggs/The number of muffins=2/12=x/108 We will solve the above proportion using the Cross Products Property.

2/12=x/108

CrossMult

Cross multiply

2*108= 12* x

Multiply

Multiply

216=12x

DivEqn

.LHS /12.=.RHS /12.

18=x

RearrangeEqn

Rearrange equation

x=12

Ella needs 12 eggs to make 108 muffins.