Quantitative Aptitude - Arithmetic Ability Questions

If ΔABC is an equilateral triangle of side 16 cm, then the length of altitude is

Average of 31 numbers is 19. If the average of first 8 numbers is 24, then what is the average of the remaining numbers?

The ratio of cost price and selling price 25:26. The percent of profit will be

What is the difference of the factors of the expression x2 + (1/x2) – 6?

A square playground measures 1127.6164 sq.m. If a man walks 2 9/20 m a minute, the time taken by him to walk one round around it is approximately.

In what time will Rs.4400 become Rs.4576 at 8% per annum interest compounded half-yearly?

Shivam is 10% less efficient than Vivek. If Vivek can make a helmet in 9 days, then in how many days Shivam can complete the same work?

A and B can complete a task in 20 days, B and C can complete it in 30 days while C and A can do the same task together in 24 days. How many days will each of and C take to complete the task individually?