Question

How many inches of ribbon did anais use to trim the curtains?

Answer 1

In order to solve this question, we need to compute the following operation:

`2(1)/(2)yard\text{ - \lparen2feet+ 8inches\rparen}`

or equivalently,

`(5)/(2)\text{ yards- \lparen2feet+ 8inches\rparen}`

However, we need to convert first the yards and feet to inches. Since 1 yard has 36 inches, we have

`\begin{gathered} (5)/(2)\text{ yards=}(5)/(2)yard(\frac{36\text{ inches}}{1\text{ yards}}) \\ (5)/(2)\text{ yards=90 inches} \end{gathered}`

Similarly, since 1 feet has 12 inches, we get

`\begin{gathered} 2\text{ feet = 2feet\lparen}(12inches)/(1feet)) \\ 2\text{ feet = 24inches} \end{gathered}`

Then, our first operation is equivalent to

`90inches-(12inches+8inches)`

which gives

`90-20=70inches`

Then, How many inches of ribbon did Anais use to trim the curtains? Answer: Anais used 70 inches of ribbon.