They would be able to clean 7 cars in 56 mins
$12 each. $75 - $39 = $36. $36 divided by 3 = $12. Assuming he used all his money.
Answer: no he is not correct
648
/ \
162 4
/ \ / \
81 2 2 2
/ \
9 9
/ \ / \
3 3 3 3
Grand Total: $29.81
Total Bill: $24.84
Sales Tax (8%): $1.84
Total Tip (20%): $4.97
