1. A car travels first 10 km in 20 minutes and another 10 km in 30 minutes. What is the average spped of the car in m/s ?
Kindly refer to the given link for the similar query:
https://www.meritnation.com/ask-answer/question/a-travels-30-km-in-10-minutes-and-next-40-km-in-30-minu/number-systems/9257335
https://www.meritnation.com/ask-answer/question/a-travels-30-km-in-10-minutes-and-next-40-km-in-30-minu/number-systems/9257335