Subject: mathqa
Question: a man bought 10 crates of mangoes for $ 40 total . if he lost 2 of the crates , at what price would he have to sell each of the remaining crates in order to earn a total profit of 20 percent of the total cost ?
Option: 
A: $ 6
B: $ 12
C: $ 10
D: $ 14
Answer: A