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sanjeev kumar

· started a discussion

· 1 Months ago

cc (Question: 196254.0 )

why r u not replying our enquires //??

Question:
Two pipes A and B can fill a cistern in 20 minutes and 25 minutes respectively. Both are opened but B is closed after 5 minutes. What will be the total time taken (in minutes) to fill the cistern ?
Options:
A) 17
B) 11
C) 15
D) 16
Solution:

Suppose A takes x minutes more after 5 minutes of working together with B to fill the cistern

then,


Knowledge Expert

· commented

· 1 Months ago

Q is: A person lends Rs. 500 to P for 3 years at a certain rate and Rs. 2000 to Q for the same year at 2% higher rate. If he got a total of Rs. 345 as simple interest from both P and Q, then at what rate the money was lent to Q?
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