Discuss Forum
1. If 3 is added to both the numerator & the denominator of a fraction, it becomes 5/7. If 9 is subtracted from both the numerato & denominator, it become 1/3. What is the fraction?
- A. 15/21
- B. 15/21
- C. 15/21
- D. 15/21
Answer: Option B
Explanation:
(x+3)/(y+3)=5/7
or, 7x-5y=-6…(1)
(x-9)/(y-9)=1/3
or, 3x-y=18…(2)
by solvingboth of the equatios,
x=12, y=18
So, x/y=12/18
(ans)
Post your comments here: