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You can think of any rate as "task/time period." So here the fuel consumption rate for A is 10 liters/5 hours = 2 liters/hour and the consumption rate for B is 15 liters/3hours = 5 liters per hours.NandishSS wrote:Engine A can work 5 hours on 10 liters of fuel while engine B can work 3 hours on 15 liters of fuel. If engine efficiency is defined as a reciprocal to the hourly fuel consumption rate, what is the ratio of the efficiency of engine B to that of engine A?
A)2/5
B)1/2
C)2
D)5/2
E)3
OA: A
What is hourly fuel consumption rate ?
"Hourly fuel consumption rate" means the amount of fuel consumed in an hour measured in Liter per hourNandishSS wrote:Engine A can work 5 hours on 10 liters of fuel while engine B can work 3 hours on 15 liters of fuel. If engine efficiency is defined as a reciprocal to the hourly fuel consumption rate, what is the ratio of the efficiency of engine B to that of engine A?
A)2/5
B)1/2
C)2
D)5/2
E)3
OA: A
What is hourly fuel consumption rate ?
Engine A’s fuel consumption is 10/5 = 2 liters per hour.NandishSS wrote: ↑Fri Sep 08, 2017 8:23 amEngine A can work 5 hours on 10 liters of fuel while engine B can work 3 hours on 15 liters of fuel. If engine efficiency is defined as a reciprocal to the hourly fuel consumption rate, what is the ratio of the efficiency of engine B to that of engine A?
A)2/5
B)1/2
C)2
D)5/2
E)3
OA: A
What is hourly fuel consumption rate ?
