Question

4.) Solve : 0.06x + 0.09 (15 - x) = 0.03 (15)


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Answer 1

Answer: x=30

Step-by-step explanation:

0.06x + 0.09 (15 - x) = 0.03 (15)

or, $\frac{6x}{100}+\frac{9*(15-x)}{100}=\frac{3*15}{100}$

or, $\frac{6x+(9*15-9x)}{100}=\frac{45}{100}$

or, 6x+135-9x=45

or, -3x=45-135=-90

or, 3x=90

or, x=30

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