Quantitative Aptitude Ques 1115
Question: What number when added to each of the numbers 6, 7, 15, 17 will make the resulting numbers proportional?
Options:
A) 6
B) 5
C) 4
D) 3
Show Answer
Answer:
Correct Answer: D
Solution:
- Let the required number be $ x. $
$ \therefore $ $ \frac{6+x}{7+x}=\frac{15+x}{17+x} $
$ \Rightarrow $ $ 102+17x+6x+x^{2}=105+15x+7x+x^{2} $
$ \Rightarrow $ $ 102+23x=105+22x $
$ \Rightarrow $ $ x=3 $
BETA
