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Eva8 [605]
4 years ago
8

3/9=21/k proportion

Mathematics
1 answer:
fiasKO [112]4 years ago
7 0
\frac{3}{9} = \frac{21}{k}\\\\\frac{1}{3}= \frac{21}{k}\\\\\sf Cross~multiply\\\\1(k) = 21(3)\\\\k = 21(3)\\\\\boxed{k = 63}
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The price of an item yesterday was $135 . Today, the price rose to $216 . Find the percentage increase.
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Answer:

60% increase

Step-by-step explanation:

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3 years ago
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nataly862011 [7]

Answer:

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4 years ago
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Answer:

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