The distance between the two cities is 450 km. Two cars drove out of these cities at the same time towards each other.
| April 27, 2021 | education
The distance between the two cities is 450 km. Two cars drove out of these cities at the same time towards each other. The speed of one of them is 70 km / h, and the other is 80 km / h. In how many hours they will meet.
Cars are moving towards each other. This means that the speed of their approach is equal to the sum of their speeds.
1) 70 + 80 = 150 (km) the total speed of approach of cars.
Knowing the distance and speed, you can find the time by the formula:
t = S: v, where t is time, S is distance, v is speed.
S is the distance between two cities, equal to 450 km.
v – the total speed of approach of cars, equal to 150 km / h.
2) 450: 150 = 3 (hours) cars will meet.
Answer: cars will be able to meet in 3 hours.
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