If the numerator of a fraction is increased by 3, the fraction becomes 3/4. If the denominator is decreased by 7, the fraction becomes 1. Determine the original fraction.

Which of the following equations represents "If the numerator of a fraction is increased by 3, the fraction becomes 3/4"? (Hint: cross products)

3n + 9 = 4d
4n + 3 = 3d
4n + 12 = 3d

got C

Question

If the numerator of a fraction is increased by 3, the fraction becomes 3/4. If the denominator is decreased by 7, the fraction becomes 1. Determine the original fraction.

Which of the following equations represents "If the numerator of a fraction is increased by 3, the fraction becomes 3/4"? (Hint: cross products)


3n + 9 = 4d
4n + 3 = 3d
4n + 12 = 3d

got C

ranga · Answer

You have the correct answer.

ranga · Answer

So you already got first equation as: 4n + 12 = 3d

If n/d is the original fraction and if the denominator is decreased by 7  the fraction becomes 1.  Put it in the equation form just like you did the first part.
Can you tell me what you get for the second equation?