Quantitative Aptitude - Arithmetic Ability Questions

Train A takes 1 hour more than train B to travel a distance of 720 km. Due to engine trouble speed of train B falls by a third, so it takes 3 hours more than Train A to complete the same journey? What is the speed of Train A (in km/hr)?

How many numbers are there from 700 to 950 (including both) which are neither divisible by 3 nor by 7?

What is the value of cosec 11π/6?

A starts a business, after 6 months B also join him with Rs.4500 and after 2 months of B’s joining C also join them with Rs.4500. If A gets approx. Rs 4900 out of total annual profit of Rs. 10,000 then find the approximate value of initial investment of A.

In a computer game, a builder can build a wall in ten hours while a destroyer can demolish such a wall completely in fourteen hours. Both, the builder and the destroyer were initially set to work together on level ground. But after 7 hours the destroyer was taken out. What was the total time (in hrs) taken to build the wall ?

From a pack of 52 cards, 3 cards are drawn together atrandom, What is the probability of both the cards are king?

Find the fourth proportional to 2, 3, 6.

If two successive discounts of 25% and 30% are given, then what will be the ratio of marked price to selling price?