Quantitative Aptitude - Arithmetic Ability Questions

If 4x - 5y = -37 and 7x + y = -16, then x - y = ______

Six years ago, the ratio of the two persons P and Q was 3 : 2. Four years hence the ratio of their ages will be 8 : 7. What is P's age?

Out of two numbers, 65% of the smaller number is equal to 45% of the larger number. If the sum of the numbers is 2574, then what is the value of larger number?.

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

Select the odd number from the given alternatives.

The areas of two similar triangles ΔXYZ and ΔPQR are 100 sq cms and 25 sq cms respectively. If PQ = 4 cm then what is the length of XY (in cm)?

What is the value of cos2A/(1 + sinA)?

The line passing through the point (5,a) and point (4,3) is perpendicular to the line x - 6y = 8. What is the value of 'a'?