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1.
The ratio of two numbers is 7:4, if 8 is added to both the number ration becomes 13:8 what is the smaller number?
- A. 40
- B. 40
- C. 40
- D. 40
Answer: Option A
Explanation:
Let's 7x and 4x be two number.
Now, 7x + 8:4x + 8 = 13:8
Or, 52x + 104 = 56x + 64
Or, 56x - 52x = 104 - 64
Or, 4x = 40
Or, x = 10
So small number is 4x = 4×10 = 40
Or, x
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