Answer:
10.
Step-by-step explanation:
14 + 12 + 8 + 12 + 5 + 11 + 62 ÷ 6 = 10
Answer:
108pi inches^3
Step-by-step explanation:
Pi x r^2 x h
Answer:
5 1/4 hours
Step-by-step explanation:
The rate of filling is 1/3 vats per hour. The rate of emptying is 1/7 vats per hour, so the net rate of filling is ...
(1/3) -(1/7) = 4/21 . . . . vats per hour
Then for filling one vat, it will take an amount of time that is the inverse of this:
21/4 = 5 1/4 . . . hours per vat
If both pipes are left open, the vat will fill in 5 1/4 hours.
