A 45,000 liter water tank is to filled at the rate 220 liters per minute. Estimates to the nearest half hour, how long it will take to fill the tank?

A 4 hours
B 3.5 hours
C 3 hours
D 2.5 hours

Correct Answer: 3.5 hours

Assume that the tank fills in x minutesBy Direct Proportion,x1/y1 = x2/y2220/1 = 45000/xx = 45000/220x = 204.54 x = 205 minutes (approx.)Divide x by 60 in order to convert from Minutes to Hours⇒ 205/60 = 3.41 hoursEstimating to nearest half hours, The 45000 L tank is filled in 3.5 hours at the rate of 220 L/m
Bissoy MCQ
#গণিত #নল ও চৌবাচ্চা (Pipes and cistern) #Jamuna Bank Ltd #Jamuna Bank Ltd - Officer - 2004

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