Question

The bill for the two long distance calls are $7 for 5 minutes call and $17 for a 10 minutes call.

What will be the cost of a 15 minute call?

Answer 1

Answer:

21 and 25.5

Step-by-step explanation:

for first call for per minute =$ 7/5

for second type call for per minute =$17/10

cost for 15 minutes in first call = 7/5×15=$21

cost for 15 minutes in second type = 17/10×15=$25.5