A) 5 : 2
B) 1 : 4
C) 4 : 1
D) 4 : 5
Correct Answer: A
Solution :
[a] Let the smaller number \[=x\] and the greater number \[=y.\] According to the question, \[\left( y-\frac{x}{2} \right)=4\left( x-\frac{x}{2} \right)\] \[\Rightarrow \] \[y-\frac{x}{2}=4\frac{x}{2}\]\[\Rightarrow \]\[y=2x+\frac{x}{2}\] \[\Rightarrow \] \[y=\frac{5x}{2}\]\[\therefore \]\[y:x=5:2\] |
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