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A person travels in a car with uniform speed. He observes a

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Manager
Joined: 01 Nov 2007
Posts: 101
A person travels in a car with uniform speed. He observes a [#permalink]

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11 Mar 2008, 23:59
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A person travels in a car with uniform speed. He observes a mile-stone, which has 2 digits. After one hour he observes another mile-stone with same digits reversed. After another hour he observes another mile-stone with same 2 containing a 0. Find the speed of the car?

A 40
B 45
C 50
D 55
E 60
Director
Joined: 14 Aug 2007
Posts: 728

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12 Mar 2008, 08:00
az780 wrote:
A person travels in a car with uniform speed. He observes a mile-stone, which has 2 digits. After one hour he observes another mile-stone with same digits reversed. After another hour he observes another mile-stone with same 2 containing a 0. Find the speed of the car?

A 40
B 45
C 50
D 55
E 60

>>After another hour he observes another mile-stone with same 2 containing a 0.

I did not understand what this sentence means. is it same 2 digits containing a 0?

Anyway I the possible answers are B or D, in other 3 numbers i.e. 40, 50, 60. the units digit 0 will not change the units digit of the 2 digit miles, and the number can't be reversed.
Re: PS (word problem)   [#permalink] 12 Mar 2008, 08:00
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