Quantitative Aptitude - Arithmetic Ability Questions

The volume of a spherical balloon is increased by 700%. What is the percentage increase in its surface area?

Two trains are moving in the opposite direction at speed of 30 km/hr and 45 km/hr respectively, whose lengths are 450 m and 550 m respectively. What is the time taken (in seconds) by slower train to cross the faster train?

What is the value of (1/√2) Cot 45° + (1/√3) Cosec 60°?

If 2x + (9/x) = 9, then what is the minimum value of x2+1x2 = ?

If the expression px3 – qx2 – 7x – 6 is completely divisible by x2 – x – 6, then what is the value of p and q respectively?

If the rice is sold at Rs 56 per kg, there would be a 40% loss. To earn a profit of 20% what should be the price of rice (per kg)?

The marked price of a pencil is 35% more than its cost price. What maximum discount percentage can be offered by the shopkeeper to sell his pencil at no profit or no loss?

A person crosses a 900 metres wide road in 120 seconds. What is his speed (in km/hr)?