6. You are selling a product in an area where \( 30 \% \) of the people live in the city; the rest live in the surburbs. \( 20 \% \) of the city dwellers use your product; and \( 10 \% \) of those from the surburbs use your product. (a) What fraction of the people in the area uses your product? \( [4] \) (b) What proportion of those that use your product are city dwellers. \( [4] \)
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- Since 30% of the people live in the city, and 20% of these city dwellers use your product, the fraction of city dwellers who use your product is \(0.30 \times 0.20 = 0.06\). This means 6% of the total population are city dwellers who use your product. Show more…
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