Ramu walks at 3kms per hour while his brother Somu walks at 4kms per hour. They both started to school, which is 2kms away from their house at 7:00 A.M. Then, which of these is are correct?
Somu reaches school at 7:20 AM
Somu reaches school 10 mins earlier than Ramu
Ramu reaches school at 7:30 AM
All the above
Ramu =3 kmph Somu =4 kmph Both starts at 7 AM Distance =2km
Time taken by Ramu ⇒S=v×t
2=3×t
t=23hr=23×60
=40min
Time taken by Somu ⇒2=4×t
t=12hr=30 min.
∴ Somu reaches school 10 mins earlier than Ramu.