Mathematics, 10.12.2020 16:50, keke6361

John has two pumps to inflate his raft. One pump can fill the raft 1.25 times as fast as the second pump. When John uses both pumps, the raft is inflated in 5 hours. How long would it take John to inflate the raft if he only used the slower pump?

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John has two pumps to inflate his raft. One pump can fill the raft 1.25 times as fast as the second...