Originally Posted by

**wheelsfire**

What is a% of b% of c% of 1000 000?

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$\displaystyle \frac{a}{100}\cdot \frac{b}{100}\cdot \frac{c}{100}\cdot 1,000,000 = a\cdot b \cdot c.$

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Solve for x and y:

2x - 3y = 8 ....................(1)

5x + 2y = 31.4 ...............(2)

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$\displaystyle \frac{2}{3}\cdot(1)$

$\displaystyle \Rightarrow \frac{4}{3}x - 2y = \frac{16}{3} \rightarrow (3)$

$\displaystyle (3) + (2)$

$\displaystyle \Rightarrow \frac{19}{3}x = \frac{551}{15} $

Now solve for $\displaystyle x$ and sub it back into $\displaystyle (2)$ to find y.

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