campus placement TCS NQT Mock Test (Cognitive Ability) Quantitative Aptitude Speed Time and Distance Relative Speed
A takes 30 minutes more than B to cover a distance of 15 km at a certain speed. But if A doubles his speed, he takes one hour less than B to cover the same distance. What is the speed (in km/h) of B?
1
5
2
\(6\frac{1}{2}\)
3
6
4
\(5\frac{1}{2}\)