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Pattern Formation

If 3 fans hav...

Question

If 3 fans have 9 blades, find the number of blades for 45 fans?

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Solution

3 fans have $⟶$ 9 blades
$∴$ 1 fan has $⟶$ 9/3 = 3 blades
$∴$ 45 fans will have $⟶$ 45 $\cdot$ 3 = 135 blades

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