Answer:
The answer SHOULD be: 6.7 (unless if it's cash than 6.67)
Explanation:
10 divided by 7 +250 "by" so 10 divided by (7+250), than divided by 60
10 division (7+250) division 60
10 division 257 division 60
(10 divided by 257 = rounds to 0.04) divded by 60
0.04 divided by 60 = 6.6666 (6 repeating) rounding to 6.7