Quantitative Aptitude - Arithmetic Ability Questions

The equation of a line is given by 4y-6x+9=0. Find the slope of other line which is perpendicular to it.

Let O be the orthocentre of the triangle ABC. If ∠BOC = 150°, Then ∠BAC is

In ΔDEF measure of angle E is 90°. If cosD = 8/17, and DE = 16cm, then what is the length (in cm) of side DF?

Present age of A is 2 times the present age of B. After 8 years the B's age will be 4 times of C's present age. If C celebrated his fifth birthday 9 years
ago, then what is the present age (in years) of A?

The upstream speed of the boat is 40 kmph and the speed of the boat in still water is 55 kmph. What is the downstream speed of the boat?

If 2+aa + 2+bb + 2+cc = 4, then the value of ab+bc+caabc is

Marked price of a chair is Rs 800 and discount is 15%. What is additional discount (in percentage) should be offered to the customer to bring the price of chair to Rs 578?

On a certain principal, simple interest amounts to Rs. 2,000 in two years at the rate of 10% p.a. What will be the difference in the amount of interest if the same is compounded on annual basis?