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A car is travelling at a uniform speed. The driver sees a
milestone showing a 2-digit number. After travelling for an
hour the driver sees another milestone with the same digits
in reverse order. After another hour the driver sees
another milestone containing the same two digits. What is
the average speed of the driver.
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Answer Posted / ram
Rajesh is correct.
It mentiones clearly that the car is moving in a uniform
speed. hence we have to find a number ab (b - units place
and a - tens place, eg, in number 46, a = 4 and b = 6)such
that ba-ab = axb - ba. Only then the speed will be
uniform.. The only combination possible that way is 16,61
and 106. hence the average speed is 45 km/hr
| Is This Answer Correct ? | 26 Yes | 9 No |
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