Others Maths Puzzle

Q. A set of 10 pipes (set X) can fill 70% of the tank in 7 minutes. Another set of 5 pipes(set Y) fills 3/8 of the tank in 3 minutes. A third set of 8 pipes(set Z) can empty 5/10 of the tank in 10 minutes Ques How many minutes will it take to fill the tank if all the 23 pipes are opened at the same time

Option
A)5 min
B)40/7 min
C)6 min
D)None of these

Read Solution (Total 1)

set x => 70/100 in 7 min
=> In 1 min, 1/10th tank is filled

set Y => 3/8 in 3 min
=> In 1 min, 1/8 th tank is filled

set Z => 5/10 in 10 min => In 1 min, 1/20th tank is emptied

=> In 1 min,
(1/10) + (1/8) - (1/20) = 7/40 th tank is filled

Time required to fill full tank = 40/7 min
11 years agoHelpfull: Yes(1) No(0)

Others Other Question

A set of 15 different words are given. In how many ways s it possible ot choose a subset of not more than 5 words.
A)4944
B)4^15
C)15^4
D)4943 Q. IF only half of set X are closed and only half the pipes of set Y are open and all other pipes are open , how long will it take to fill 49% of the tank?

Option
A)16 min
B)13 min
C)7 min
D)noe of these