Using a ratio: (5/7) yards/$2.50 = x yards/$1 where x is the unknown yards

Solving for x we fnd, x = (5/7)/2.5 = .286 yards

Hannah L.

asked • 08/16/19
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Using a ratio: (5/7) yards/$2.50 = x yards/$1 where x is the unknown yards

Solving for x we fnd, x = (5/7)/2.5 = .286 yards

Nestor R. answered • 08/16/19

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Statistician with a very good grounding in Algebra

Jenny spends $2.50 for 5/7 yard of yarn.

If she were to spend only $1.00, how much yarn could she get?

$1.00 is 40% of $2.50. This is from seeing that 1/2.5 = 0.4 or 40%.

Apply this knowledge to the quantity of yarn.

0.4 = 4/10.

5/7 * 4/10 = (5*4) / (7*10) = 4/14 = **2/7 yard**.

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