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Mathematics 18 Online
OpenStudy (debpriya):

The two cities X and Y lie on a straight line. Two men P and Q left simultaneously for Y and X from X and Y respectively. P reaches Y and immediately turns around and moves towards X. On reaching X , again he turns around and moves towards Y. This kind of movement continues indefinitely. Q also travels in a similar manner. The distance between X and Y is 1000m and the ratio of the speeds of P and Q is 3:2. Find the distance travelled by P when he meets Q for the 4 th time. ( a.4200m b.5600m c.4200m d.4800m)

ganeshie8 (ganeshie8):

|dw:1468071285926:dw|

ganeshie8 (ganeshie8):

Since they meet at least once in each direction, I believe the answer should be less than 4000m.

OpenStudy (debpriya):

The answer is given to be 4200m but I don't get the logic :(

ganeshie8 (ganeshie8):

Do you get why I say the answer cannot be greater than 4000m ?

ganeshie8 (ganeshie8):

Would you agree that P meets Q as he goes from X to Y the first time ? |dw:1468074396366:dw|

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