Quantitative Aptitude - Arithmetic Ability Questions

A sum of Rs 8000 is divided into two parts. The simple interest on first part at the rate of 21% per annum is equal to the simple interest on second part at the rate of 35% per annum. What is the interest (in Rs) of each part?

In a committee there are 25 members. If two members whose ages are 64 years and 40 years are replaced by the two new members, then average age of 25 members is decreased by 2 years. What is the average age (in years) of the new members?

If U = 450 and V = 585, then V is how much percentage more than U?

The price of an article is cut by 42%, to restore to its original value, the new price must he increased by ______.

What is the value of 64% of 75% of 8100?

If a - b = 2 and ab = 15, then what is the value of a3- b3?

2cos[(C+D)/2]sin[(C-D)/2] is equal to

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.