"your long distance service provider charges you $.06 PER minute plus a monthly access fee of 4.95 for referring a friend,you receive $10 service credit this month.if your long-distance bill is 7.85,how many long-distance minute did you use"

Answer 1

Your question would be much more understandable if you'd used conventional capitalization, spacing, and punctuation.

"Your long distance service provider charges you $.06 per minute plus a monthly access fee of 4.95. For referring a friend,you receive $10 service credit this month. If your long-distance bill is 7.85, how many long-distance minutes did you use?"

(17.85 - 4.95) / 0.06 = ?

Answer 2

21.5