Quantitative Aptitude - Arithmetic Ability Questions

The average age of A and B is 18 years. After 3 years, C joins them and the average ages of A, B and C becomes 22 years. The age of C is ?

The average of 19 consecutive even integers is 50. The highest of these integers is

Two successive discounts of 10% and 25% are given by Raman on a shirt. If the marked price of the shirt is Rs 600, then what is the value (in Rs) of discount?

If 3x - 10 = -(2x + 5), then the numerical value of (x - 4)3 is

PQR is a right angled triangle in which PQ = QR. If the hypotenuse of the triangle is 20 cm, then what is the area (in cm2) of the triangle PQR?

If P = 7 + 4√3 and PQ = 1, then what is the value of 1/P2 + 1/Q2?

10% discount is offered on an item. By applying a promo code the customer wins 5% cash back. What is the effective discount?

If the salary of Manoj is 40% less than that of Subhash, then by how much percentage is the salary of Subhash more than that of Manoj?