An empty pool being filled with water at a constant rate takes 7 hours to fill to 3/5 of its capacity. How much more time will it take to finish filling the pool?
Choices:
A) 5 hr 30 min
B) 5 hr 20 min
C) 4 hr 40 min
D) 3 hr 12 min
E) 2 hr 40 min
(3/5) of a pool/ 7 hours = 3/35 (the rate)   (3 pools/35 hours) = (2/5* pool)/ x hours   4 hr 40 minross multiply 3x = (2/5) 35   x = 4 2/3   2/3 of an hour = 40 minutes   4 hr 40 min
<result>C</result>
An empty pool being filled with water at a constant rate takes 7 hours to fill to 3/5 of its capacity. How much more time will it take to finish filling the pool?