A car driver leaves Bangalore at 8.30 A....

A car driver leaves Bangalore at 8.30 A.M and expects to reach a place 300km from Bangalore at 12.30 P.M. At 10.30 he finds that he has covered only 40% of the distance. By how much he has to increase the speed of the car in order to keep up his schedule?

45 km/hr

40 km/hr

35 km/hr

30 km/hr

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