a) 1 hours later
b) 2 hours later
c) $$\frac{1}{2}$$ hours later
d) 3 hours later
Answer: b
Explanation: Lucknow(X →)_____120 km _____(← Y)Kanpur
Relative speed = (25+35) = 60 km/h
Time taken to complete 120 km
= $$\frac{{120}}{{60}}$$ = 2 h
They will meet 2 hours later.
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