Two automobiles are 75 kilometers apart and travelling towards each other. One automobile is moving at 60km/h and the other is moving at 40km/h. In how many minutes will they meet?

45 minutes

25 minutes

30 minutes

None of these

To find the time it takes for the automobiles to meet:

Relative speed = 60 km/h + 40 km/h = 100 km/h

Distance = 75 km

Time = Distance / Relative speed

= 75 km / 100 km/h

= 0.75 hours

Convert hours to minutes:

0.75 hours × 60 minutes/hour = 45 minutes