Question

Yin's cellphone plan costs $30 a month. She used 12.5 hours in May. What was her cost per minute

Answer 1

cost per minute is 0.04

Explanation:

Unit rates defined as the rates are expressed as a quantity of 1 such as 2 feet per second or 5 miles per hour they are called unit rates.

Given: Costs = $ 30 a month

In a month of may she used cellphone 12.5 hours.

First convert 12.5 hours in minute.

Use conversion: 1 hour = 60 minutes

then, 12.5 hours =
`12.5 * 60 = 750 minute`

to find the cost per minute.

by definition;

unit rate(cost per minute ) =
`(30)/(750) = 0.04` cost per minute.

therefore, her cost per minute is 0.04