Download Aptitude Crack
img not found img not found

Pipes and Cistern

Q1: Two pipes can fill a tank in 20 and 24 minutes respectively and a waste pipe can empty 3 gallons per minute. All the three pipes working together can fill the tank in 15 minutes. The capacity of the tank is:

A 60 gallons

B 100 gallons

C 120 gallons

D 180 gallons

ANS:C - 120 gallons

Work done by the waste pipe in 1 minute = 1 - 1 + 1
15 20 24
    = 1 - 11
15 120
    = -  1 .    [-ve sign means emptying]
40
Volume of 1 part = 3 gallons.
40
Volume of whole = (3 x 40) gallons = 120 gallons.



img not found
img

For help Students Orientation
Mcqs Questions

One stop destination for examination, preparation, recruitment, and more. Specially designed online test to solve all your preparation worries. Go wherever you want to and practice whenever you want, using the online test platform.