Two persons P, and Q start running simultaneously in the same direction from the point X and Y respectively. If the distance between X and Y is 10 km. P reaches another point Z which is in the same line and returns immediately after travelling for 10 km more from the point Z, he meets Q at point R which is in between point X and Point Z. If the rate of speed of P, and Q is 10 km and 5 km per hour then find the distance between X and Z. (it is given that XZ > YZ)

Two persons P, and Q start running simultaneously in the same directio

1.	Two persons P, and Q start running simultaneously in the same direction from the point X and Y respectively. If the distance between X and Y is 10 km. P reaches another point Z which is in the same line and returns immediately after travelling for 10 km more from the point Z, he meets Q at point R which is in between point X and Point Z. If the rate of speed of P, and Q is 10 km and 5 km per hour then find the distance between X and Z. (it is given that XZ > YZ)
A.	50 km
B.	45 km
C.	35 km
D.	40 km
E.	None of these
Answer» B. 45 km

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