Question

suppose a 5 minute overseas call casts $5.91 and a 10 minute call casts $10.86. the cost of the call and the length of the call are related. How long can you talk on the phone if you have a $20 bill​

Answer 1

21.72

Explanation:

10/10.86=20/?

10 x 2=20

10.86 x 2=21.72

Answer 2

Answer21.73 dividing is the key