Question
Find two numbers whose sum is $100$ and whose ratio is $9 : 16.$
✓
Answer
Let the two numbers are $9x$ and $16x,$ whose sum is $100. $
$\Rightarrow 9x + 16x = 100 $
$\Rightarrow 25x = 100$
$\Rightarrow x = 4$
$\Rightarrow 9x + 16x = 100 $
$\Rightarrow 25x = 100$
$\Rightarrow x = 4$
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