Quantitative Aptitude - Arithmetic Ability Questions

Meghnad can do a piece of work in 45 hours. If he is joined by Jayshri, who is 50% more efficient, in what time will they together finish the work?

Sum of four times a fraction and 6 times its reciprocal is 11. What is the fraction?

If 169 is subtracted from the square of a number, then the result obtained is 7056. What is the number?

(45.004% of 1439.97 –15.99% of 2249.97) ÷ 35.98 = ?

A train left 1 hour later than the scheduled time but in order to reach its destination 200 km away in time, it had to increase its usual speed by 10 km/hr. What is the usual speed (in km/hr) of the train?

Rehman goes on a trip on his motor-cycle and rides for 661 kms. If he rides for 8 hours at a speed of 31 km/hr, find at what speed he travels for the remaining 7 hours of the journey?

Ram's father is twice as old as Ram is. Eight years ago the age of Ram's father was 2.5 times his age. What is Ram's current age?

What is the average of 36, 43, 51, 68, and 77?