daniro27

1 Questions
0 Answers

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463

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+4

who can make this?

real problem, taps type A = 20 can fill 2.5 m tube in 5 minutes
taps type B = 12 can fill 2.5 m tube in 3 minutes

it is needed to fill a 7m tube read more ..

daniro27 Mar 21, 2017