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1. A person X starts from Lucknow and another person Y starts from Kanpur to meet each other. Speed of X is 25 km/h, while Y is 35 km/h. If the distance between Lucknow and Kanpur be 120 km and both X and Y start their journey at the same time, when they will meet ?

A. 1 hours later

B. 2 hours later

C. $\frac{1}{2}$ hours later

D. 3 hours later

Solution:

Lucknow(X →)_____120 km _____(← Y)Kanpur

Relative speed = (25+35) = 60 km/h
Time taken to complete 120 km,
=

\frac{120}{60}

= 2 h
Thus, They will meet 2 hours later.

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