Quantitative Aptitude - Arithmetic Ability Questions

If 2x + 3y = 0 and 3x ­- 4y = 34, then x ­- y = ______

Calculate the area (in cm2) of a circle of radius 17.5 cm.

Find the odd word/letters/number from the given alternatives.

The average weight of P, Q and R is 47 kg. If the average weight of P and Q be 32.5 kg and that of Q and R be 48.5 kg, then what is the weight of Q (in kgs)?

Mukesh sells two shirts. The cost price of the first shirt is equal to the selling price of the second shirt. The first shirt is sold at a profit of 30% and the second shirt is sold at a loss of 30%. What is the ratio of the selling price of the first shirt to the cost price of the second shirt?

In a committee there are 25 members. If two members whose ages are 64 years and 40 years are replaced by the two new members, then average age of 25 members is decreased by 2 years. What is the average age (in years) of the new members?

To cover a distance of 90 km in 2.5 hours what should be the average speed of the car in meters/second?

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