Quantitative Aptitude - Arithmetic Ability Questions

The marked price of a door is Rs 1400. It is sold at a discount of 28%. If the cost price of the door is Rs 700, then what is the profit (in Rs)?

A 150 m long train, travelling at 54 km/h, crosses a platform in 42 seconds. What is the length of the platform?

The average age of 40 students of a class is 16 years. If the average age of 24 students is 15.5 years and that of the 15 students is 16 2⁄3 years, then the age of 40th student is

What is the ratio of simple interest earned on certain amount at the rate of 12% for 6 years and that for 12 years?

A can make a cupboard in 10 days and B can do it in 50 days. Along with C, they did the job in 6.25 days only. Then in how many days C alone can do the job?

If Cot θ = 24/7, then what is the value of Sec θ?

What is the length of the side of an equilateral triangle, if its area is 36√3 sq cm?

If the shopkeeper sells an item at Rs 4400 which is marked as Rs 5000, then what is the discount that he is offering?