

InterviewSolution
Saved Bookmarks
1. |
If 50% of(x - y)= 30% of(x + y),then what per cent of x is y1). 25%2). $33\frac{1}{3}$%3). 40%4). 400% |
Answer» According to question,$50\%$ of (X-y)=$30\%\ of (x+y)$$\Rightarrow \frac{1}{2}(x-y)=\frac{3}{10}(x+y)$$\Rightarrow \frac{x}{2}-\frac{3X}{10}=\frac{3y}{10}+\frac{y}{2}$$\Rightarrow \frac{5x-3x}{10}=\frac{3y+5y}{10}$$\Rightarrow \frac{x}{5}=\frac{4y}{5}$$\therefore x=4y$$\Rightarrow y=\frac{x}{4} or \frac{x}{4}\times 100%=25x$obiously, y is 25 % of x |
|