Question

Martin uses 24 boards that are each 5 3/4 feet long to build a tree house. The wood costs $1.65 per foot. Find the total cost of woods.

Answer 1

Each board = 5 and 3/4 feet.

The 24 boards would be:           24 *     5 and 3/4

5 and 3/4 to mixed fraction = (5*4 +3)/4 = 23/4

The total length of the 24 boards =  24 * 23/4 = 23*6 = 138 feet.

The cost is $1.65 per foot.

138 feet = 138*1.65 = 227.70

Total cost =$227.70

Hope this helped.

Answer 2

Well, we know the amount per foot of wood $1.65. each piece is 5 3/4 (which is also 5.75) ft, so multiply these two number to see how much each piece costs.
1.65×5.75=9.4875
now to know how much total, we need to multiply by 24 (since we have 24 pieces)
9.4875×24=227.70
So, he spent $227.70 for the wood