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One pump can fill a tank of water in 5 hours. A second tank can fill the same tank in 4 hours. If both pumps are used together, how long will it take to fill the tank? 4/5 hours…

One pump can fill a tank of water in 5 hours. A second tank can fill the same tank in 4 hours. If both pumps are used together, how long will it take to fill the tank? 4/5 hours…
asked 200k views
5 votes
One pump can fill a tank of water in 5 hours. A second tank can fill the same tank in 4 hours. If both pumps are used together, how long will it take to fill the tank?

4/5 hours
20/9 hours
9/20 hours
5/4 hours

asked
User Mehdi Yeganeh
by
7.9k points

2 Answers

6 votes

Answer:

4/5 hours

Explanation:

answered
User Oliver Konig
by
8.2k points
4 votes

Answer:

20/9 hours

Explanation:

I got it right on the quiz

answered
User Paulmorriss
by
8.0k points
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