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1. There are 2 numbers in the ratio of 4:5. If 4 is subtracted from both numbers the ration becomes 3:4 . What will be the ratio if 4 is added in the both numbers?
- A. 1:2
- B. 1:2
- C. 1:2
- D. 1:2
Answer: Option C
Explanation:
Let
Numbers are 4x and 5x
According to the question,
(4x - 4)/(5x - 4) = 3/4
or, 16x - 16 = 15x - 12
or, 16x - 15x = 12 + 16
or, x = 4
so the numbers are = 4*4 = 16 and 5*4 = 20
Adding 4 the numbers will be = 16 + 4 = 20 and 20 + 4 = 24
Required Ratio = 20:24
= 5:6 (divided by 4)
Ans: 5:6
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