A large tanker can be filled by two pipes A and B in 60 minutes and 40 minutes respectively. How many minutes will it take to fill the tanker from empty state if B is used for half the time and A and B fill it together for the other half?
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part filled by {a+b} in 1 minute = [1/60+1/40] = 1/24
suppose the tank is filled in x minute
then x/2 [1/24+1/40] = 1
:- x/2 * 1/15 = 1
x= 30 mins
answer is 30 mins
hope u understand
suppose the tank is filled in x minute
then x/2 [1/24+1/40] = 1
:- x/2 * 1/15 = 1
x= 30 mins
answer is 30 mins
hope u understand
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