Quantitative Aptitude - Arithmetic Ability Questions

The first and last terms of an arithmetic progression are 37 and ­18. If the sum of the series is 114, then it has how many terms?

The area of a circle is 616 sq.m. Find its diameter.

Choose the one which is odd from the following options.

If 9x2 + 16y2 = 60 and 3x + 4y = 6, then the value of xy is

If the ratio of cost price and selling price be 10:11, then the profit percentage is

A shopkeeper allows a discount of 20% to his customers and still gains 25%. Find the Marked price of an article which costs Rs.600 to the shopkeeper.

Atul can do a piece of work in 18 days, Aaravya is 50% more efficient than Atul. How much more time does Atul take than Aaravya to do the same piece of work?

9 hrs after a goods train passed a station, another train travelling at a speed of 72 km/hr following that goods train passed through that station. If after passing the station the train overtakes the goods train in 3 hours. What is the speed of the goods train?