two persons start running towards each other from two points that are 120m apart. first person runs with a speed of 5ms-1 and the other with a speed of 7ms-1 . both the person meet after
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Speed = dist / time
Dist of A = 120m + dist ran by B
Dist of B = dist of A - 120 ..(1)
Dist of B = speed × time
= 5t
Dist of A = speed × time
= 7t
From (1)
5t = 7t -120
7t - 5t = 120
2t = 120
t = 60 secs :)
Anonymous:
wrong answer
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