Working alone, a small pump takes twice as long
as a large pump takes to fill an empty tank.
Working together at their respective constant rates,
the pumps can fill the tank in 6 hours. How many
hours would it take the small pump to fill the tank
working alone?
a) 8
b) 9
c) 12
d) 15
e) 18
OA coming in after a while
as a large pump takes to fill an empty tank.
Working together at their respective constant rates,
the pumps can fill the tank in 6 hours. How many
hours would it take the small pump to fill the tank
working alone?
a) 8
b) 9
c) 12
d) 15
e) 18
OA coming in after a while
