5. Maggie's car can travel 32 miles on one gallon of gasoline. At the current price of $4 per gallon, how many miles can Maggie travel with $20 worth of gasoline? 
(A) 64
(B) 128
(C) 160
(D) 320
(E) 640
5. C.
$$
20 \div 4 \times 32=160
$$