Question

A recipe calls for 2 eggs to make 10 pancakes.How many eggs will you need to make 35 pancakes?

Answer 1

you would need 7 eggs

Answer 2

Set up the proportion.  Then cross multiply and isolate the variable to solve.

$\frac{2(eggs)}{10 (pancakes)} = \frac{x}{35 (pancakes)}$

2(35) = 10(x)

70 = 10x

$\frac{70}{10} = \frac{10x}{10}$

7 = x

Answer: 7 eggs