A motorcycle covers 80 km. in 4 hours. Its speed is doubled. What distance will it cover in the next 1 hour?

A motorcycle covers 80 km. in 4 hours. Its speed is doubled. What distance will it cover in the next 1 hour?
1). 360 km.
2). 40 km.
3). 60 km.
4). 120 km.

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