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A and B are walking with 25 kmph and 30 kmph. A is walking towards east and B is towards south. They both started at 7:00 A.M at what time they are 130 metres apart.
Read Solution (Total 10)
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- let after t sec they are 130m apart then
(25* 5/18 *t)^2 + (30* 5/18 *t)^2 = 130^2
=> t * (5/18) * 5 * √ 61 = 130
=> t = 12.98425 sec ~ 13 sec
so, at 7:00:13 AM they are 130m apart.
- 10 years agoHelpfull: Yes(41) No(5)
- 11.9442 secs.
- 10 years agoHelpfull: Yes(2) No(2)
- @Rakesh : why did you take square ?
- 10 years agoHelpfull: Yes(1) No(1)
- 164 min is answer means 9:44 Am
- 10 years agoHelpfull: Yes(0) No(9)
- @arti...how?
- 10 years agoHelpfull: Yes(0) No(1)
- plz provide explanation ..
- 10 years agoHelpfull: Yes(0) No(1)
- please provide correct explanation
- 10 years agoHelpfull: Yes(0) No(0)
- @rakesh
thanx.. - 10 years agoHelpfull: Yes(0) No(1)
- plz provide proper explaination
- 10 years agoHelpfull: Yes(0) No(1)
- 11.98425 secs
- 10 years agoHelpfull: Yes(0) No(1)
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