## anonymous one year ago A goes through 2 3/5 boxes of nails in 3 1/2 rooves. How much would he use to finish 8 rooves?

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1. mathstudent55

By "rooves", do you mean "roofs", the plural of "roof"?

2. mathstudent55

Use a proportion. Let x = the unknown number of boxes needed for 8 roofs. $$\large 2\dfrac{3}{5}$$ boxes are to $$\large 3 \dfrac{1}{2}$$ roofs as x boxes are to 8 roofs. $$\Large \dfrac{2\frac{3}{5}}{3 \frac{1}{2}} = \dfrac{x}{8}$$ Convert the mixed numerals into fractions. Then cross multiply and solve for x.

3. KnightOfPentacles

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4. KnightOfPentacles

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5. KnightOfPentacles

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