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The speed of Uday is 5 km/h more than th...

The speed of Uday is `5 km/h` more than that of Subash. Subash reaches his home from office 2 hours earlier than Uday. If Subash and Uday stay 12 km and 48 km from their respective Offices, find th speed of Uday.

A

10 km/h

B

4 km/h

C

9 km/h

D

8 km/h

Text Solution

Verified by Experts

The correct Answer is:
D
(i) Frame the quadratic equation from the given data.
(ii) Assume the speed of Subhash as x and Subhash reaches his home in t hours and Uday reaches his home in `(t+2)` hours.
(iii) Now, use `"time" = ("distance")/("speed")`, then solve the equa-tion for x.
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