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Attaullah2519
27.08.2019 •
Mathematics
Aman is building a gazebo and plans to use for the floor two boards that are 8 and three fourths feet , four boards that are 13 and five eighths feet , and two boards that are 6 one half feet. find the total number of feet in all the boards.
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Ответ:
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:
So, the number 8 and three fourth feet is equal to:
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:
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:![4*\frac{109}{8} = \frac{4*109}{8} =\frac{109}{2}](/tpl/images/0202/7910/0d002.png)
Two boards that are 6 one half feet: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:
Converting this number to a mixed number we get:
Because, when we divide 545 by 6, we get 90 as a quotient, 5 is the remainder and 6 is the divisor.
Ответ:
A.
Step-by-step explanation:
rounding down will allow her to buy the most and not be over the quantity of 10 dollars