A motor starts with the speed of 70 kmph with its speed increasing every two hours by 10 kmph. In how many hours will it cover 345 kms ?
A motor starts with the speed of 70 kmph with its speed increasing every two hours by 10 kmph. In how many hours will it cover 345 kms ?
A$2 \frac{1}{4} \text{ hours}$
B$4 \frac{1}{2} \text{ hours}$
C4 hours 5 minutes
DCannot be determined
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