The two motor boats went out in the same direction. Moreover, the second boat left an hour after the first.

| May 5, 2021 | education

The two motor boats went out in the same direction. Moreover, the second boat left an hour after the first. The speed of the first boat is 15 km / h, the second is 20 km / h. In how many hours and at what distance will the second boat catch up with the first?

This means that the first boat, before the start of the second, sailed 15 km in 1 hour.

Find out how many kilometers in one hour the second boat will catch up with the first. To do this, we need to subtract the speed of the first boat from the speed of the second boat:

1) 120 km / h – 15 km / h = 5 km / h.

Therefore, the second boat will catch up with the first in just:

2) 15 km / 5 km / h = 3 hours.

Now let’s find out the distance that the two boats will sail from the original point to their meeting:

3) 15 km / h * 4 h = 60 km.

Bottom line: the boats will meet in 3 hours.



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