Use the five step problem solving to answer the following question.

Andrew is having an irrigation system installed in his yard. Company A charges $1250 plus $15 per sprinkler head. Company B charges $1200 plus $17 per sprinkler head. How many sprinkler heads will Andrew need to have to make company A a better deal?

Given: Company A - Initial Charge- $1250  Price per sprinkler - $15

          Company B - Initial Charge - 1200   Price per sprinkler - 17

Required: Number of sprinkler heads so that Company A has a better deal

Solution: Company A will be a better deal if total charges of Com A < total charges of Com B

Computations:

Total charges = Initial + price per sprinkler

let x - number of sprinkler

1250 + 15x < 1200 + 17x

1250-1200< 17x - 15x

2x >50

x > 50/2

x> 25

Answer: Com A will have a better deal if Andrew needs more than 25 sprinklers.Ex. 26