Quantitative Aptitude - Arithmetic Ability Questions

If (4x - 3) - (2x + 1) = 4, then the value of x is

What least number must be subtracted from 518, so that the sum is completely divisible by 13?

Select the odd letters from the given alternatives.

If the ratio of marked price and selling price is 11 : 10, then what is the discount percentage?

Which of the following will yield a recurring decimal?

A pipe, working at full speed, can fill an empty cistern in 1 hour. However, during the first hour it worked at one-twelfth of its capacity, during the second hour at one-ninth of its capacity, during the third hour at one-sixth of its usual capacity and during the fifth hour it was only one -third as efficient as it was supposed to be. A second pipe also displayed similar performance, but if it worked at full speed would have filled the empty cistern in 2 hours. Together with a drain pipe that drained water out of the tank at a constant rate, the empty cistern could be filled in 5 hours, all the three pipes working concurrently. How many hours will it take the drain pipe to empty the filled cistern if no other pipe was functioning during the time?

What is that least number that must be added to the product 684 × 686 to make it a perfect square?

A train leaves Kazipet at 5 a.m. and reaches Bangalore at 3 p.m. Another train leaves Bangalore at 7 a.m. and reaches Kazipet at 5 p.m. When do the two trains meet? Assume that the trains travels at equal uniform speeds.