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A Distillate flows into an empty 64-Gallon drum at spout A and out of the drum at spout B.If the rate of flow through A is 2 gallons per hour,how many gallons per hour must flow out at spout B so that the drum is full in exactly 96 hours?:
A: 3/8
B: 1/2
C: 2/3
D: 4/3
E: 8/3
Ans:
Required rate= 64/96 =2/3
Rate at B = 2-2/3 = 4/3
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