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McKenna needs to build a window frame. She needs 2 pieces of lumber that are 4 34 feet long and 2 more that are 3% feet long. How much lumber does McKenna need in all?
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Answer:

15.5 feets of lumber

Step-by-step explanation:

To build a window frame :

Length of lumber needed = 4 3/4 feets and 3 feets

Number of 4 3/4 feets lumber needed = 2

Number of 3 feets lumber needed = 2

Total required lumber :

(2 * 4 3/4)feets + (2 * 3) feets

(2 * 19/4) feets + 6 feets

9.5 feets + 6 feets

= 15.5 feets

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