Casey earns $150 a week and consumes only fish and shrimp. The price of fish is $3 a pound and the price of shrimp is $5 a pound. Casey can buy a maximum of _ pounds of fish or a maximum of _ pounds of shrimp.
A.30; 50
B.15; 30
C.30; 15
D.50; 30
正确答案:50; 30