Quantitative Aptitude - Arithmetic Ability Questions

If 7x ­- 5y = 13 and 2x -­ y = 5, then (x -­ y) is

In the following question, select the related number from the given alternatives.

695 : 659 : : 839 : ?

The value of tan 315° cot (­ -405° ) is equal to

If the loss of percent on article is 15%. Then the ratio of the cost price and sell price will be

Working 10 hours a day, Aman can complete a piece of work in 18 days. How many hours a day should he work so as to finish the work in 15 days?

Working 5 hours a day, Shivam can read a book in 24 days. How many hours a day should he work so as to finish the same work in 8 days?

The length of diagonal BD of a parallelogram ABCD is 36 cm. P and Q are the centroids of triangle ABC and triangle ADC respectively. What is the length (in cm) of PQ?

If a + b = 1 and ab = -6, then what is the value of a3+ b3?