Question

two towns train are 780 km apart .two super fast trains leaves from leave from both the towns at 3 pm towards each other at the speed of 120km/h and 140km/h .at what time will they pass each other

Answer 1

let the time taken be x hrs
During this period Train A would cover x*120 km
During this period train B would cover x* 140 km
                  Then x*120 + x*140= 780
                                                x=3
They will meet at 6 pm.