Question
One pipe can fill a pool in 10 hours. Another pipe can fill the pool in 30 hours. How long would it take them to fill the pool if they were working together?
Answers
Damon
rate 1 = R1 = 1 pool/10 hr
R2 = 1 pool/30 hr
together
(1 pool/10 hr) T + (1 pool/30 hr)T = 1 pool
T/10 + T/30 = 1
3 T/30 + 1 T/30 = 1
4 T = 30
T = 7.5 hours
R2 = 1 pool/30 hr
together
(1 pool/10 hr) T + (1 pool/30 hr)T = 1 pool
T/10 + T/30 = 1
3 T/30 + 1 T/30 = 1
4 T = 30
T = 7.5 hours
LOL U BAD
lol u so bad. it's 7.5 hours
Dotty
2
One pipe can fill a pool in 9 hours. Another pipe can fill the pool in 6 hours. How long would it take them to fill the pool if they were working together?
Answer
One pipe can fill a pool in 9 hours. Another pipe can fill the pool in 6 hours. How long would it take them to fill the pool if they were working together?
Answer
-_-
7 hours 30 minutes
Adam
7 hours 30 minutes or 7.5 hours
Damon gave a great explanation I'm just restating this in case someone missed his
Damon gave a great explanation I'm just restating this in case someone missed his