The denominator of a fraction exceeds its numerator by 7. If the numerator as well as the denominator is increased by 9, the fraction becomes 2/3. Which of the following is the original fraction?

[12 / (0.09 of 0.3)] x 2=?

Which of the following fractions is greater than 3 /4 and less than 5 / 6 ?

[ .6 x .6 x .6 x .4 x .4 x .4 + 3 x .6 x .4 x (.6 + .4 )] = ?

What will be the value of (25.732)² - (15.732)²

If 0.12 ÷ x² = 12, than x = ?

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