Question

A phone plan costs $10 per Month, +.03 per text message. John wants his phone bill to be less than $40, before taxes. What is the maximum number of text messages John can send

Answer 1

The maximum number of text message John can send is 100

Explanation:

Given as :

The phone bill of the John = $ 10 per month + $ 0.3 per text message

John want his bill amount to be less than $ 40

Let The maximum number of text message John can send = n

According to question

The total bill amount = The cost of phone plan + rate of text message

I.e $ 10 per month + $ 0.3 × maximum number of text message = $ 40

or, $ 0.3 × n = $ 40 - $ 10

Or, $ 0.3 × n = $ 30

∴ n =
`(30)/(0.3)`

I.e n = 100

So, The maximum number of text message John can send = n = 100

Hence The maximum number of text message John can send is 100 Answer