Quantitative Aptitude - Arithmetic Ability Questions

Length and breadth of a rectangle are increased by 40% and 70% respectively. What will be the percentage increase in the area of rectangle?

If 7x - [3(2x - 3)]/2 = 1/2, then what is the value of x?

The marked price of a book is Rs 4200. The shopkeeper gives two successive discounts of 25% and y% to the customer. If the customer pays Rs 2898 for the book, then what is the value (in percentage) of y?

What is the value of (1 + cotA)2 + (1 -­ cotA)2?

Calculate the angle subtended by the chord at the point on the major arc if the radius and the chord of the circle are equal in length.

If cos 45° - ­ sec 30° = x, then value of x is

PQR is an equilateral triangle whose side is 10 cm. What is the value (in cm) of the inradius of triangle PQR?

If the roots of the equation a(b – c)x2 + b(c – a)x + c(a – b) = 0 are equal, then which of the following is true?