Answer:
8 months
Step-by-step explanation:
You: $20 + 15.50 per month I Your friend: $88 + 7
First month: 35.50 I First month: 95.00
Second month: 51.00 I Second month: 102.00
Third month: 66.50 I Third month: 109.00
Fourth month: 82.00 I Fourth month: 116.00
Fifth month: 97.50 I Fifth month: 123.00
Sixth month: 113.00 I Sixth month: 130.00
Seventh month: 128.50 I Seventh month: 137.00
Eighth month: 114.00 I Eighth month: 114.00
