Pipe ‘A’ can fill a tank in 25 hours while pipe ‘B’ takes 30 hours to empty it. Pipe ‘A’ is opened alone when the tank was empty and after 13 hours pipe ‘B’ is also opened. In how much time will the tank get filled completely?
Let the total capacity of the tank be 150 units Efficiency of pipe ‘A’ = 150/25 = 6 units/hour Efficiency of pipe ‘B’ = 150/30 = 5 units/hour Tank filled in 13 hours = 13 × 6 = 78 units Therefore, required time taken to fill the remaining tank = (150 – 78)/(6 – 5) = 72 hours Therefore, total time taken = 13 + 72 = 85 hours
A rectangular paper of width 8cm and length 22cm rolled along it width and a cylinder is formed.
On the above Intimation, Solve the question give...
Over withdrawal of ground water in coasts and islands does not cause
LEED Rating pertains to
Sum of the two numbers is 6 times their difference. Then the numbers are in the ratio.
The national song ‘Vande Mataram’ was composed by Bankim Chandra Chatterjee i n which language?
If the sugar price is increased by 25% by how much percent consumption should be reduced that expense remains same.
The square of the sum of two numbers equals the square of the difference between them. Which of the following has to be true?
Match List I with List II
Choose the correct answer f...
The sum of three different natural numbers is equal to their product. The sum of their squares is
Who is Irom Sharmila?