Roberto works selling cars on commission. He gets 12% commission and sold 22 cars. Three of the cars sold for $18,000 each, nine of the cars sold for $12,000 each, and ten of the cars went
for $6,000 each. Calculate his total sales income from cars, before commission. *

a)$222,000
b) $200,000
c) $228,000
d) $250,000