25100× 120+40100× 380 = x100× 637 3000+15200 = 637x x = 18200637 = 260091 = 28.57% #160; ...

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Converting Percentages to Fractions

Question

$25$ % of $120 + 40$ % of $380 =$ ? of $637$ :

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Solution

$\frac{25}{100} \times 120 + \frac{40}{100} \times 380 = \frac{x}{100} \times 637$
$3000 + 15200 = 637 x$
$x = \frac{18200}{637} = \frac{2600}{91} = 28.57 %$

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