Question

amir is making bag lunches for a group of 5 friends to take on a day trip to a museum. each person will get one sandwich and some snacks. he places 20 items total in the bags. to determine the number of snacks in each bag, he first divides 20 by 5, and then he subtracts 1. which equation could amir have used to help him correctly solve this problem? 5(s + 1) = 20 5s - 1 = 20 5(s - 1) = 20 5s + 1 = 20

Explanation:

Step1: Define variable for snacks

Let $s$ = number of snacks per bag.

Step2: Total items per bag

Each bag has $s + 1$ items (1 sandwich + $s$ snacks).

Step3: Total items for 5 bags

5 bags have $5(s + 1)$ total items, equal to 20.

Step4: Match to options

The equation matches $5(s + 1) = 20$.

Answer:

A. $5(s + 1) = 20$