How many minutes did they use?

Question

How do I solve this word problem?

 

Sprint charges $16.00 per month plus $0.06 per minutes for calls. If a family pays $45.90 which has 26.00 included for data/roaming charges, how many minutes did they use?

Answer 1

$16 is a constant fee per month.

$0.06 per minute is a rate. So the charge varies depending on how many minutes are used.

let x = number of minutes

 

$26 is given as the amount of roaming included in the bill

 

Sprint bill = $45.90

 

$45.90 = $16 + $26 + $0.06(x)

 

$45.90 = $42 + $0.06(x)

 

$3.90 = $0.06(x)

 

60 min = x