Answer to Question #179969 in Math for Sara

Question

You are throwing a party, and you need 2 bags of chips for every 20 guest how many bags of chips do you need?- Equivalent ratios

Answer 1

Let $N=$ the number of guests, $m=$ the number of bags of chips.

Then

$$\dfrac{N}{m}=\dfrac{20}{2}$$

Solve for $m$

$$m=\dfrac{N(2)}{20}$$

$$m=\dfrac{N}{10}$$

We need $m=\dfrac{N}{10}$ bags of chips for $N$ guests.