Question

Raju, steven and anwer start walking at speeds of 3 km/hr, 4km/hr,&5km/hr respectively. When will the three first cross the same point , if they are following the same route and have started from the same point at the same time?

Answer 1

Answer:

when they would have completed of 60kms.

in such questions we simply take the LCM of the values given and convert them to same unit(if needed)