Quantitative Aptitude - Arithmetic Ability Questions

A train travelling at the speed of 66 kmph crosses a 300 m long platform in 24 seconds. How long was the train?

Excluding stoppages, the speed of a bus is 72 kmph and including stoppages, it is 60 kmph. For how many minutes does the bus stop per hour?

Kishan cycled a distance of 120 km at a certain speed. If he cycled 2 km slower every hour, he would have taken 3 more hours to reach his destination. What is the speed in kmph at which Kishan actually cycled?

A does 50% of a work in 12 days. He then calls in B and they together finish the remaining work in 8 days. How long B alone would take to complete the whole work?

In a class of 39 students there are 26 girls. The average weight of these girls is 42 Kgs and average weight of the full class is 48 kgs. What is the average weight (in kgs) of the boys of the class?

What is the remainder, when 4x4 +10x3-20x2+90 is divided by (x+2) ?

The flight fare between two cities is increased in the ratio 9:11. What is the increase (in Rs) in the fare, if the original fare was Rs. 18,000?

If L : M = 3 : 5 and M : N = 2 : 3, then N : L = ?