If you subtract 1/2 from a number and multiply the result by 1/2, you get 1/8. The number is

A whole number is doubled and 9 added. The result is tripled and becomes 171. If 3 is subtracted from the given number, result divisible by

A fraction becomes 1/3 when 1 is subtracted from the numerator and it becomes 1/4 when 8 is added to its denominator. The fraction is:

A fraction is equivalent to 0.375. If 5 is added to its numerator and 8 to its denominator, the resulting fraction is 1/2. What is the original fraction?

A number is first decreased by one-fifth of its value and then increased by one-fourth of the resulting value. If the final result is 48, what was the original number?

The sum of the reciprocals of A’s ages (in years) 2 years ago and 2 years from now is 2/3. The present age of A is