Problem Solving (PS) | Re: Jerry and Jim run a race of 2000 m. First, Jerry gives Jim

­Take the second instance 

Jim covers 2000m in say y mins
Then Jerry covers 1000m in y-3 mins
Therefore Jerry covers 2*1000m in 2*(y-3) mins 

Plug option A. Here Jim's time ie y= 10 
Then Jerry's time = 2*(10-3)= 14 mins. Reject. 

Plug option B. Here Jim's time ie y= 5
Then Jerry's time = 2(5-3) = 4 mins. Satisfies. 

Plug option C. Here Jim's time ie y= 9 
Then Jerry's time = 2*(9-3)= 12 mins. Reject. 

Plug option D. Here Jim's time ie y= 9 
Then Jerry's time = 2*(9-3)= 12 mins. Reject. 

Plug option E. Here Jim's time ie y= 10
Then Jerry's time = 2*(10-3)= 14 mins. Reject. 

Answer: B

Statistics : Posted by VikidSunny • on 05 Nov 2011, 11:45 • Replies 29 • Views 45546

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