Question: 
A driver of an auto rickshaw sees a lorry m ahead of him .After 30 seconds the lorry 90 m behind. If the speed of the auto rickshaw is 38 km /hr, then what is the speed of the lorry?
20 km /hr
25 km /hr
23 km/hr
23 km/hr
Answer: 
20 km /hr
Last Updated: 
10/11/2021 - 17:00