Question
The LCM of two numbers is 180, and the numbers are in
the ratio 5:9. What will be the sum of the numbers?Solution
ATQ,
Let the numbers be 5m and 9m.
LCM of the numbers = 45m
Given, 45m = 180
So, m = 4
Thus, the numbers are 20 and 36.
Hence, the sum = 20 + 36 = 56.
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...
Pipe ‘A’ and pipe ‘B’, together can fill 20% of a tank in 5 hours while pipe ‘C’ takes 30 hours to empty it. Pipe ‘A’ and pipe ‘B’ w...
Pipe A alone fill the tank in x hours and Pipe B alone fill the tank in (x – 10) hours. If the efficiency of pipe B is triple of pipe A and pipe A...
Two inlets X, Y fill the tank in 18 and 9 minutes. Outlet Z is 50% less efficient than X. ‘X’ and ‘Z’ open for 6 minutes, then X is replaced wit...
Pipes P and Q can fill a tank in 12 hours and 15 hours respectively, while a third pipe C can empty the tank in 24 hours. If all three pipes are opened ...
Pipe X can empty a completely filled tank in 60 hours. Pipe Y and X together can fill an empty tank completely in (z+6) hours. The efficiency of pipe Y ...
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 an empty tank in 36 minutes whereas an outlet pipe can empty the fully filled tank in 54 minutes. Find the time taken by both the...
Pipe ‘A’ and pipe ‘B’, together can fill 20% of a tank in 5 hours while pipe ‘C’ takes 37 hours to empty it. Pipe ‘A’ and pipe ‘B’ w...
Two pipes A and B can fill a tank in 24 minutes and 36 minutes, respectively. If both pipes are opened simultaneously, but B is turned off after 12 minu...
Relevant for Exams:
