nkmungila wrote:
A bike running at 80 km/h initially is slowed down to 60 km/h as soon as the fuel indicator touches the half level mark. It keeps running at this speed till it runs out of fuel, thereby covering a total distance of 640 km in 10 hours. If the bike consumes 2 litres of fuel per hour, what is the capacity (in litres) of the fuel tank of the bike?
(A) 16
(B) 20
(C) 32
(D) 40
(E) 56
let t=time at 60 kmh
60(t)+80(10-t)=640 km
t=8 hours
8*2=16 liters=1/2 fuel tank capacity
16*2=32 liters total fuel
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