The distance travelled by a person varies directly with the duration of the journey.  If the person travels 784 km in 14 hours, in how many hours will the person cover 1120 km?

20 hours

When speed is constant then distance is directly proportional to time.

Hence,

Speed in both case is same, therefore,

⇒ \(\frac{784}{14}\) = \(\frac{1064}{T}\)

⇒ T = \(\frac{1120}{56}\)

⇒ T = 20 hours