Quantitative Aptitude - Arithmetic Ability Questions

A sum of money (P) doubles in 10 years. How much would it be in 20 years at the same rate of simple interest?

Two numbers are 35% and 40% lesser than a third number. By how much percent is the second number to be enhanced to make it equal to the first number?

The compound interest earned in two years at 12% per annum is Rs 10176. What is the sum (in Rs) invested?

Select the odd word/letters/number/number pair from the given alternatives.

The HCF of 24, 60 and 90 is:

If (6 ­- 18x) -­ (x ­- 7) = 8, then the value of x is ______.

If (7x -­ 13) ­ (12x + 3) = 14, then the value of x is ______ .

Determine the value of 'x' in x = 11+2+12+3+13+2