Quantitative Aptitude - Arithmetic Ability Questions

A car travels a certain distance at 32 km/h and comes back at 68 km/h. What is the average speed for total journey?

A can do 1/3rd of a work in 5 days and B can do 2/5th of this work in 10 days. Both A and B, together can do the work in

Mayank, Deepak and Pawan, each of them working alone can complete a work in 5, 10 and 15 days respectively. If all three of them work together to complete a work and earn Rs. 12000 what will be Deepak's share of the earnings?

A 150 m long train, travelling at 54 km/h, crosses a platform in 42 seconds. What is the length of the platform?

What is the ratio of simple interest earned on certain amount at the rate of 12% for 6 years and that for 12 years?

Find the value of 62532+18

Δ DEF is right angled at E. If m∠D = 45%., then Cosec F =

The average age of 40 students of a class is 16 years. If the average age of 24 students is 15.5 years and that of the 15 students is 16 2⁄3 years, then the age of 40th student is