Question

what must be added to each terms 3:5,so that it becomes 4:5

Answer 1

1 and 0 must be added to the numerator and denominator respectively.
$\frac{3 + 1}{5 + 0} = \frac{4}{5}.$




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Answer 2

Let the number be x .

$\frac{3 + x}{5 + x} = \frac{4}{5} \\ \\ 5(3 + x) = 4(5 + x) \\ \\ 15 + 5x = 20 + 4x \\ \\ 5x - 4x = 20 - 15 \\ \\ x = 5$
So the number is 5.


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