Quantitative Aptitude - Arithmetic Ability Questions

30% discount is offered on an item. By applying a promo code the customer wins 5% cash back. What is the effective discount?

In ΔABC, D and E are points on side AB and AC respectively. DE is parallel to BC. If lengths of AD, DB and AE are 8 cm, 4 cm and 12 cm respectively, what is the length of AC?

The ratio of present ages of R and S is 6:7. Before 12 years the ratio of their ages was 9:11. What is R's present age (in years)?

At 10% discount the selling price of a toaster is Rs 18000, what is the selling price if the discount is 37.5%?

The side of an equilateral triangle is 14 cm. Find its area (in sq.cm).

Find the unit place digit in 71 x 72 x 73 x 74 x 76 x 77 x 78 x 79.

A merchant marks the price of his articles 30% above the cost price. He gives some discount on it and earns a profit of 13.75%. What is the discount percentage?

PQRS is a square, M is the mid-point of PQ and N is a point on QR such that NR is two-third of QR. If the area of ΔMQN is 48 cm2 , then what is the length (in cm) of PR ?