Two boats are moving towards each other. Now there are 25 km between them. The speed of one of them is 7/8 of the speed
| December 24, 2020 | education
Two boats are moving towards each other. Now there are 25 km between them. The speed of one of them is 7/8 of the speed of the other. Find the speed of each boat if you know that they will meet in 5/12 hours.
let x be the speed of one boat, then the speed of the other is 7 \ 8x. There is a total of 25 km between them.
1) (x + 7 \ 8x) * 5 \ 12 = 25
x + 7 \ 8x = 25: 5 \ 12
x = 60: 1 7 \ 8
x = 32 (km / h)
2) 32 * 7 \ 8 = 28 (km \ h)
Answer: the speed of the first boat is 32 km / h, and the speed of the second is 28 km / h
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