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Start learning 50% faster. Sign in nowSum of the age of total children and teacher = 31 × 25 = 775 Sum of the age of children after excluding = 30 × 24 = 720 Teacher’s age = 775 – 720 = 55 years
Two pipes, A and B, can independently fill the tank in 20 minutes and 25 minutes respectively, while pipe C can empty 7 gallons from the tank in 5 minut...
If a tank can be filled by a tap in 12 hours, but due to an outlet, it actually takes 6 hours longer to fill the tank, find the duration in which the ou...
Pipe P can fill a tank in 12 hours, while pipe Q can fill the same tank in 20 hours. Both pipes are initially opened to fill an empty tank, but after 5 ...
An inlet pipe can fill a tank in 18 minutes, while an outlet pipe can empty it in 27 minutes. Sujata starts the inlet pipe at 6 a.m., but the outlet pip...
Two taps would fill a cistern in 18 and 24 minutes respectively. Both tapsbeing opened find when the Ist tap must be turned off so that the cistern may ...
If a tank can be filled by a tap in 10 hours, but due to an outlet, it actually takes 5 hours longer to fill the tank, find the duration in which the o...
Pipes A and B can fill an empty tank in 20 hours and 24 hours, respectively, while pipe C can drain the full tank in "x" hours. If all three pipes (A, B...
Pipe ‘X’ alone can fill a tank in 20 hours. When pipe ‘X’ and ‘Y’ are opened together, they can fill 60% of the same tank in 6 hours. Find t...
Pipe ‘A’ can fill a tank in 12 hours while pipe ‘B’ takes 15 hours to empty it. Pipe ‘A’ is opened alone when the tank was empty and after 1...
Tap A and Tap B fill a drum of volume 552 liters in 24 minutes. If their efficiencies are in the ratio x:y respectively and B alone takes to fill the ci...
