At most, Keith can spend $90 on sandwiches and chips for a company lunch. He already bought chips for $15 and will buy sandwiches that cost $6 each. The inequality 15 + 6s ≤ 90 represents the described cost, where s is the maximum number of sandwiches that could be bought. What is the maximum number of sandwiches Keith can buy?

Mathematics · High School · Tue Nov 03 2020

Answered on

Given : 

15 + 6s ≤ 90

Where, s = number of sandwiches 

6s ≤ 90 - 15

6s ≤ 75

s ≤ 75/6

s ≤ 12.5

 

So, Keith can buy 12 sandwiches.