Question
It takes pipe A 14 days to fill the fish pond. It takes pipe B 18 days to fill the same pond. Find out how pond it takes both pipes working together to fill the pond
Answers
Reiny
A's rate = 1/14
B's rate = 1/18
combined rate = 1/14+ 1/18 = 8/63
time at combined rate = 1/(8/63) = 63/8 or 7 days , 21 hours
B's rate = 1/18
combined rate = 1/14+ 1/18 = 8/63
time at combined rate = 1/(8/63) = 63/8 or 7 days , 21 hours