SOLUTION: You are comparing cell phone plans. Verizon says each phone line is $40 and there is a start up fee of $60. T-Mobile says each line costs $25 and the initial fee is $150. Find t

Question 1169411: You are comparing cell phone plans. Verizon says each phone line is $40 and there is a start up fee of $60. T-Mobile says each line costs $25 and the initial fee is $150. Find the number of phones and the cost each plan will be when the plans cost the same.
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

let the number of the phone lines be and total cost of the plan
if Verizon says each phone line is $ and there is a start up fee of $, we have
.....eq.1
if T-Mobile says each line costs $ and the initial fee is $, we have
.....eq.2
the number of phones and the cost each plan will be when the plans cost the same will be

check if phone lines cost same:
Verizon :
.....eq.1

T-Mobile:
.....eq.2

both are same, so it's true

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