Question

Grace needs enough wood to make a frame for a picture. she needs the two sides to measure 12 1/2 and the top and bottom to measure 7 1/4 inches. how much wood do she need to purchase

Answer 1

`39(1)/(2) \ in`

Explanation:

we know that

The total wood needed is equal to

`2[12(1)/(2) ]+2[7(1)/(4)]`

Convert mixed number to an improper fraction

`12(1)/(2)\ in=12+(1)/(2)=(12*2+1)/(2)=(25)/(2)=(50)/(4) \ in`

`7(1)/(4)\ in=7+(1)/(4)=(7*4+1)/(4)=(29)/(4)\ in`

substitute

`2[(50)/(4) ]+2[(29)/(4)]`

`(100)/(4)+(58)/(4)`

`(158)/(4)=39.5=39(1)/(2) \ in`