7 years ago, Meera’s age was equal to the Heena’s present age. The sum of Meera’s age 10 years from now and Heena’s age 5 years ago is 94 years. What was Reena’s age 12 years ago if Reena is 6 years younger to Heena?
Let the Heena present age be x Meera’s present age = ( x + 7) years According to the question, x + 7 + 10 + x – 5 = 94 ⇒ 2x + 12 = 94 x = 41 years Reena’s present age = 41 – 6 = 35 years Reena’s age 12years ago = 35 – 12 = 23 years
There are 6 inlet and (x-2) outlet pipes attached to a tank. Each inlet pipe takes 20 hours to fill the tank and each outlet pipe empties the fully fill...
Two pipes P and Q can fill tank A in 36 minutes and 72 minutes respectively and empty pipe M can empty the tank in 54 minutes. Tank A has the capacity o...
Pipe ‘A’ can fill a 180-litre tank in 18 hours. If pipe ‘A’ is 25% more efficient than pipe ‘C’ whereas pipe ‘B’ is 50% more efficient t...
Three pipes A, B and C can fill a tank in t, (t+12) & (t-12) hours respectively. Pipe A opened for d hours in the tank and after that B and C also opene...
Pipe ‘A’ and pipe ‘B’, together can fill 20% of a tank in 7 hours while pipe ‘C’ takes 36 hours to empty it. ...
Pipe ‘A’ and pipe ‘B’ can fill a cistern in 15 minutes and 36 minutes respectively. Pipe ‘C’ alone can empty the cistern in 12 minutes. If a...
Pipe ‘A’ can fill a tank in 22 hours while pipe ‘B’ takes 25 hours to empty it. Pipe ‘A’ is opened alone when the tank was empty and after 1...
In what time would a Cistern be filled by three pipes whose diameter are 2cm, 8/3cm and 4cm running together, where the largest pipe alone fill it in 18...
A cistern has two pipes one can fill it with water in 24 hours and other can empty it in 9 hours. In how many hours will the cistern be emptied if both ...
A cistern has two pipes. One can fill it with water in 16 hours and other can empty it in 10 hours. In how many hours will the cistern be emptied if bo...