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hammer [34]
3 years ago
7

A man is building a gazebo and plans to use for the floor two boards that are 8 and three fourths feet ​, four boards that are 1

3 and five eighths feet ​, and two boards that are 6 one half feet. Find the total number of feet in all the boards.
Mathematics
1 answer:
MakcuM [25]3 years ago
3 0

Answer:

The total number of feet in all the boards is 90 and 5/6 feet

Step-by-step explanation:

First, it is necessary to transform the mixed number into a fraction. This can be made following the next rule:

a\frac{b}{c} = \frac{(a*c) + b}{c}

So, the number 8 and three fourth feet is equal to:

8\frac{3}{4} = \frac{(8*4) + 3}{4} = \frac{35}{3}

That means that we two boards that are 35/3 feet. So, multiplying 2 by 35/3 we get the total feets for the first type of board. That is:

2*\frac{35}{3} = \frac{2*35}{3} =\frac{70}{3}

At the same way, we can calculate the total number of feet for the second and third type of board as:

  • Four boards that are 13 and five eighths feet:

13\frac{5}{8} = \frac{(13*8) + 5}{8} = \frac{109}{8}

4*\frac{109}{8} = \frac{4*109}{8} =\frac{109}{2}

  • Two boards that are 6 one half feet:

6\frac{1}{2} = \frac{(6*2) + 1}{2} = \frac{13}{2}

2*\frac{13}{2} = \frac{2*13}{2} =13

Finally, to find the total number of feet in all the boards, we need to sum the total number of feet for every type as:

\frac{70}{3} +\frac{109}{2} +\frac{13}{1} =\frac{545}{6}

Converting this number to a mixed number we get:

\frac{545}{6} =90\frac{5}{6}

Because, when we divide 545 by 6, we get 90 as a quotient, 5 is the remainder and 6 is the divisor.

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