Quantitative Aptitude - Arithmetic Ability Questions

Ravi had five subjects in his final examination. The maximum marks in each subject are 100. If his percentage in four subjects is 80, and he scores 65 marks in the fifth subject, determine his overall percentage for the five subjects.

The price of an article is cut by 24%, to restore to its original value, the new price must he increased by ______.

What should be the average speed of a car to cover a distance of 189 km in 3.5 hours?

To dispose of the old stocks, a person sold a tea-set for Rs. 3420, which was 43% below the cost price. In order to make a profit of 10% the seller should have sold the set for Rs. ___ more.

Ajay can do a painting in 12 days. Amit is 70% more efficient than Ajay. What is the number of days Amit would need to finish the same painting?

At what rate of compound interest per annum will a sum of Rs 10000 become Rs 12321 in 2 years?

If a = 1/a-5, then the value of a + 1/a = ?

If (a + b)/c = 6/5 and (b + c)/a = 9/2, then what is the value of (a + c)/b?