Question
There are two inlet pipes 'P', 'Q' and one outlet pipe 'R'
in a tank. ‘P’ and ‘Q’ can fill the tank in 20 minutes and 10 minutes respectively. ‘R’ is 50% less efficient than ‘P’. If ‘P’ and ‘R’ are open together but after 10 minutes, ‘P’ is replaced with ‘Q’, find the total time required to fill the tank completely.Solution
Tank capacity = 20x units (LCM of 20 and 10).
P = x units/min, Q = 2x units/min, R = 0.5x units/min
First 10 mins: (x - 0.5x) × 10 = 5x units
Remaining = 20x - 5x = 15x units
Net rate = 2x - 0.5x = 1.5x
Time = 15x / 1.5x = 10 minutes
Total time = 10 + 10 = 20 minutes
Which of the following may be the code of ‘to by goals believe’?
If PRESIDENT is coded as 8 and BODYGUARD as 8, then what is the code for INVESTIGATION?
In a certain code, if GREEK is coded as HTHIP, what is the code for SPAIN?
- In a certain code language, ‘BRAVE’ is coded as 22 and ‘FLASH’ is coded as 20. How will ‘TIGER’ be coded in that language?
In a code language, 76853 is coded as 85944. What will be the code for 78496 in that language?
What is the code for the word “You”?
What is the code for “Never together” in the given code language?
In a certain code language, 'mk qs hn' means 'spherical planet mass', 'qs vb zx' means 'radius space mass' and 'hn kb mb' means 'assumed isolated spheri...
In a certain code language ‘ROCKET’ is written as ‘FMSNJG’. How is ‘ ROBBER ’ written in that code language?
...What is the code of ‘today do’?
