Elitmus
Exam
Numerical Ability
Data Sufficiency
policeman is chasing a thief. Find the time required to catch
{A} policeman is 2 times faster.
{b} DISTANCE BETWEEN THEM IS 20 m
Read Solution (Total 5)
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- both statement are insufficient to find time because neither speed of thief nor speed of police is given.
- 8 years agoHelpfull: Yes(7) No(1)
- Both statements are in sufficient as for t= d/ s, but here we have relation given, suppose speed of thief is X so police will be 2X so relative speed will be 2X - X = X,
So t = d/ X = 20/x,so not possible. - 8 years agoHelpfull: Yes(1) No(0)
- Insufficient,
explanation=for the very first we need to assume speed of both the thief=x and policemen=2x,
than they are going in the same direction so the relevant speed is 2x-x=x,
and than the formula is Time=distance/speed which is now time = 20/x "so for time we need value of x" - 8 years agoHelpfull: Yes(0) No(0)
- Both statement is insufficient. To find time we need Distance/Speed, so we have distance 20 m but speed has not numerical specific value.
- 8 years agoHelpfull: Yes(0) No(0)
- We need exact values of there speed, we cannot find out on ratio basis. So both statement are insufficient.
- 2 years agoHelpfull: Yes(0) No(0)
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