A boat travels a certain distance along the river in 3 hours and a raft in 15

| July 6, 2021 | education

A boat travels a certain distance along the river in 3 hours and a raft in 15 hours in how many hours the boat travels the same distance against the river.

A boat along the river will cover the distance in 3 hours, and the raft in 15 hours, out in 1 hour, the boat will cover 1/3 of the distance, and the raft will cover 1/15 of the distance. This means that the boat will pass 4/15 part of the lake in 1 hour.

1) 1/3 – 1/15 = (5 * 1) / (5 * 3) – 1/15 = 5/15 – 1/15 = (5-1) / 15 = 4/15 (parts) of the distance covered boat in the lake for 1 hour.

And the boat will cover 1/5 of the distance upstream in 1 hour.
2) 4/15 – 1/15 = (4-1) / 15 = 3/15 = 1/5 (part) of the distance the boat will pass against the stream in 1 hour.

3) 1: (1/5) = 1 * 5/1 = 5 (hours) the boat will cover the entire distance upstream.



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