Question

A tank is filled in 3 hours by 3 hoses. Hose C is twice as fast as B and B is three times as fast as A. How long will hose A fill an empty tank on its own?
Plz write steps

Answer 1

The water tank will be filled up in 10 hours. Solution:
Hose B = 2 (A)
Hose C = 3 (B) ; 3 (2(A)); 6(A)

Equation:
Hours = Hose A+B+C
3 hours = A + (2(A)) + (6(A))
3 hours = 10A
A = 0.3 hours

to get hose A on its own:
A=hours
0.3 = 3 hours
=10 hours