Question

3:4= 15:(15+K)হলে,Xএর মাণ কতো হবে?
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Answer 1

$\frac{3}{4} = \frac{15}{15 + k} \: \\ 3(15 + k) = 60 \\ 45 + k = 60 \\ k = 15$

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Answer 2

Answer:

$\frac{3}{4} = \frac{15}{15 + k}$

$3(15 + k) = 15 \times 4$

$45 + 3k = 60$

$3k = 60 - 45$

$3k = 15$

$k = \frac{15}{3}$

$k = 5$

hope it helps

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