state gov WBPSC Miscellaneous Services Mock Test 2023 Quantitative Aptitude Speed Time and Distance Relative Speed
Two friends start a journey from two places 50 km apart on a bicycle towards each other at the same time. If their speeds are 5 km/hr and 6 km/hr respectively, after 3 hours what will be the distance between them in km?
1
21
2
17
3
15
4
20