C can finish a work in 20 days, while D can finish it in 30 days. If they work together for 10 days, how much of the work is left?

A. 1/3
Posted in:  Time & Work -  Aptitude -  Mathematics

A person walks 5 km at a speed of 4 km/h and then runs 10 km at a speed of 10 km/h. What is the total time taken for the journey?

B. 3 HOURS

A car travels 150 kilometers in 2 hours. What is its average speed?

B. 75 KM/H

A vehicle travels 300 km in 5 hours. What is its average speed?

A. 50 KM/H

A car travels 150 km in 3 hours. What is its average speed?

B. 60 KM/H