From village A to village B, located 42 km away, Kostya rode his bicycle for 7 hours. On the way back

| May 5, 2021 | education

From village A to village B, located 42 km away, Kostya rode his bicycle for 7 hours. On the way back he rode by car and got there in 30 minutes. How much is the speed of the car faster than the bike?

1. To find out how much the speed of the car is greater than the speed of the bike, you need to find the value of the speed of the car and the bike.

2. From the formula of the path it is known that the speed is equal to the quotient of dividing the distance by the time spent on the way.

3. Kostya traveled 42 km on a bicycle in 7 hours, which means that the speed of the bicycle is 42/7 = 6 km / h.

4. Kostya drove the same 42 km by car, but in 30 minutes, which is 0.5 hours. This means that the speed of the car is 42 / 0.5 = 84 km / h.

5. We get that the speed of the car is 84 – 6 = 78 km / h more than the speed of the bike.

Answer: the speed of the car is 78 km / h more than the speed of the bike.



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