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3:4= 15:(15+K)হলে,Xএর মাণ কতো হবে?​

Answer»

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

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