The distance between the two marinas is 330 km. From these piers, two boats left at the same time towards each other.

| July 23, 2021 | education

The distance between the two marinas is 330 km. From these piers, two boats left at the same time towards each other. The speed of one of them is 24 km / h, which is 6/7 of the speed of the other. What will be the distance between boats in 4.5 hours after the start of the movement?

1) We know the speed of the first boat (24 km / h). Let’s find the distance that he will swim in 4.5 hours.

24 (km / h) * 4.5 (hour) = 108 (km) – the distance that the first boat will sail

2) Find the speed of the second boat.
According to the conditions of the problem, the speed of the first boat is 6/7 of the speed of the other. To find the speed of the second boat, you need to find 1/7 of the speed of the second boat.

24 (km / h): 6 = 4 (km / h) – 1/7 of the speed of the second boat.

Therefore, the speed of the second boat will be 4 (km / h) * 7 = 28 (km / h).

Let’s find the distance that the second boat will sail in 4.5 hours.

28 (km / h) * 4.5 (hour) = 126 km – the distance that the second boat will sail.

Let’s find the distance between the two boats in 4.5 hours.

330 (km) – 108 (km) – 126 (km) = 96 (km)

Answer: 96 (km)



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