Question

Two men walk to meet each other from Rewari and Delhi 84 kms. a part. If
their speeds are respectively 12 km and 9 km then the time when they will
meet is :​

Answer 1

Answer:

here we take time as t

distance = time × speed

so a walk 12 km speed for t time 12t

b walk 9 km speed for t time 9t

9t + 12t = 84

21t =84

t =84/4

t =4 hour