Question

A long distance phone charge of $1.40 for 10 min or 4.50 for 45 min. which is better

Answer 1

Answer: $4.50 for 45min is better.

Explanation:

The fee per min for phone charge of $1.40 for 10 min: 1.40/10 = $0.14/min

The fee per min for phone charge of $4.50 for 45 min: 4.50/45 = $0.1/min

$0.14/ min > $0.1/min

4.50 for 45min is better.