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What’s 20% of 125?

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Answer to a math question What’s 20% of 125?

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$0.2\left( 100+20+5 \right)$

$0.2 \times 100+0.2 \times 20+0.2 \times 5$

$20+0.2 \times 20+0.2 \times 5$

$20+4+0.2 \times 5$

$20+4+1$

$25$

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