Quantitative Aptitude - Arithmetic Ability Questions

Two numbers are 35% and 50% lesser than a third number. By how much percent is the second number to be enhanced to make it equal to the first number? 

A number is decreased by 10% and the resulting number is again decreased by 20%. What is the final percentage of decrease?

If tan2A - tan2B = x, then the value of x is

What is the value of sin6θ + cos6θ + 3 sin2θ cos2θ –1?

Two cars travel from city A to city B at a speed of 30 and 36 km/hr respectively. If one car takes 3 hours lesser time than the other car for the journey, then the distance between City A and City B is

A bus runs at 50 kmph. If the speed is increased by 10 kmph, it will cover 20 km more in the same time. Find the actual distance covered?

Find the angular elevation of the sum when the shadow of a 15m long pole is 152meters

Raj purchased two laptops, first for Rs 42500 and the second for Rs 36200. He sold first laptop at a profit of 12% and the second laptop at a loss of 12%.What is the overall profit or loss?