Question 1140957
In one minute, the cold fills (1/x) of the tub and the hot (1/15), so together it is [(1/x)+(1/15)]5=1 full tub
this is (5/x)+(1/3)=1
LCD is 3x
15+x=3x
2x=15
x=7.5 minutes for cold water to fill on own.
in 5 minutes, 2/3 full by cold and 5/15=1/3 for warm.