The plane flew 1200 km in 2 hours. in how many hours will another plane fly this distance if its speed doubles?

Let us find the distance that the given plane flew, for this we need to multiply the speed value of the first plane by the time during which this plane flew this path:

1200 * 2 = 2400 km – this is the distance the first plane flew;

Let’s find the value of the speed of the second plane, for this we need to increase the value of the speed of the first plane by the indicated difference:

1200 * 2 = 2400 km / h – this is the value of the speed of this second aircraft;

Let us find the time for which this second plane will fly the same distance as the first plane, this requires the distance that the first plane flew, divided by the speed of the second plane:

2400: 2400 = 1 hour – this is the time during which the second plane will fly the given distance.

Answer: 1 hour is the time it takes for the second plane to fly the given distance.



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