1.A grocery store purchased crates of 40 oranges each for $5.00 per crate and then sold each orange for $0.20. What was the store's gross profit on each crate of oranges?
(A) $3.00
(B) $6.00
(C) $8.00
(D) $10.00
(E) $13.00
(0.2-5/40)*40 = 3....(A)