Quantitative Aptitude - Arithmetic Ability Questions

A square ground is to be covered by planting 100 saplings on each side. How many saplings are needed in all?

Find the volume (in cub.cm) of a sphere of diameter 42 cm

After a discount of 34% an article is sold for Rs. 3168. What is the marked price (in Rs) of the article?

Puneet purchases 5 dozens of oranges at the rate of Rs 120 per dozen. He sold each one of them at the rate of Rs 11.5. What is the profit (inpercentage) of Puneet?

A shopkeeper by selling 8 iphones, earns a profit equal to the selling price of 3 iphones. His profit percentage is

A racing car going at an average speed of 108 km/hr takes 15 minutes to complete a lap on a racing track. By how much should it increase its speed (inkm/hr) to complete the lap in 12 minutes?

If Gaganjyot's salary is 7/6 times of Hafiz's and Sayed's is 8/7 times of Hafiz's, what is the ratio of Gaganjyot's salary to Sayed's.

If x + y = 10 and xy = 4, then what is the value of x4 + y4?