Question

On a landscaper's plans for a garden, the scale is .5 in : 10 ft. On the plans, the main sidewalk is 3 1/2 in. long. What is the actual length of the sidewalk?

Answer 1

$\text { Ratio = } 0.5 \ \text { in } : 10 \text { ft}$

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Find 1 inch :
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$1 \ \text { in } : 10 \div 0.5 \text { ft}$

$1 \ \text { in } : 20 \text { ft}$

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Find  3 /12 inches :
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$1 \ \text { in } : 20 \text { ft}$

$3 \dfrac{1}{2} \ \text { in } : 20 \times 3 \dfrac{1}{2} \text { ft}$

$3 \dfrac{1}{2} \ \text { in } : \dfrac{20}{1} \times \dfrac{7}{2} \text { ft}$

$3 \dfrac{1}{2} \ \text { in } : 70 \text { ft}$

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Answer: The actual length of the sidewalk is 70 feet.
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