Quantitative Aptitude - Arithmetic Ability Questions

A sum becomes 1.69 times of itself in 2 years when invested at compound interest. What is the per annum rate of interest (in percentage)?

Solve : 1000x - 5 = -6

What is the slope of the line perpendicular to the line passing through the points (­-4,5) and (3,­-2)?

What is the slope of the line parallel to the line passing through the points (5, -1) and (4, -4)?

The length of the radius of a circle with centre O is 5 cm and the length of the chord AB is 8 cm. The distance of the chord AB from the point O is

The total surface area of a cube is 73.5 sq.cm. Find its side (in cm).

If FRIEND is coded as HUMJTK, how can CANDLE be written in that code?

Average age of 5 students of a school is 14 years. The average age of students and their Mathematics and science teachers is 30 years. If the age of science teacher is 6 years more than the age of Mathematics teacher, then what is the age (in years) of Mathematics teacher?