EPFO 2015 English Medium Solved Paper

Let the total points awarded to fourth place’s winner = $\mathit{x}$
Then, the total points awarded to third place s winner = $\mathit{x}+5$ the total points awarded to second place's winner = $\mathit{x}+10$ the total points awarded to first place's winner = $\mathit{x}+15$ According to the question,According to the question, $\mathit{x}+\mathit{x}+5+\mathit{x}+10+\mathit{x}+15=50$
⇒ $4\mathit{x}$ = $50-30$ $$
$\therefore \mathit{x}=5$
Hence, the points for the third position winnerare (5 + 5 =) 10,