state gov WBPSC Food SI Mock Test 2023 Quantitative Aptitude Speed Time and Distance Problem on Trains
Train A takes 1 hour more than train B to travel a distance of 720 km. Due to engine trouble speed of train B falls to two third, so it takes 3 hours more than Train A to complete the same journey. What is the speed of Train A (in km/hr)?
1
80
2
90
3
60
4
70