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shubham kumar

· started a discussion

· 1 Months ago

wrong solution (Question: 382349.0 )

on R.H.S, it should be -1 instead of 0.

m/15 + (m-2)/12 - (m-3)/4 = -1

Question:

Two pipes L and M can fill a tank in 15 and 12 hours, respectively and a 3rd pipe N can empty it in 4 hours. If the pipes are opened at 8 am, 10 am and 11 am, respectively, find the time when the tank will be emptied.

Options:
A)

12 : 50 pm

B)

2 : 50 pm

C)

1 : 50 pm

D)

3 : 50 pm

Solution:

Ans: (c)

  

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