In 7 hours, the raft sailed 22.4 km along the river. How long will it take this raft to sail 35 km under the same conditions?

univerkov | December 24, 2020 | education

First, let’s find the speed of the raft:
1) 22.4: 7 = 3.2 (km / h) raft speed
Now it remains to find the time:
2) 35: 3.2 = 10.9375h
Reducing:
3) 10.9375h ~ 11h
Answer: in about 11 hours the raft will sail 35 km.

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