Quantitative Aptitude - Arithmetic Ability Questions

In the last financial year, a car company sold 41,800 cars . In this year, the target is to sell 51,300 cars . By what percent must the sale be increased ?

If 3x^2 + ax + 4 is perectly divisible by x - 5, then the value of a is :

The ratio of two positive numbers is 3:4. The sum of their squares is 400. What is the sum of the numbers?

What is the simplified value of 12-13 ?

D and E are points on side AB and AC of ΔABC. DE is parallel to BC. If AD:DB = 2:5 and area of ΔADE is 8 cm sq, what is the area (in sq cm) of quadrilateral BDEC?

If 3a+4b3c+4d = 3a-4b3c-4d, then 

What is the value of Sin 30° - Cosec 45°?

The price of an article is cut by 31%, to restore to its original value, the new price must be increased by