Sally had 94$ to spend on 7 books. After buying them she had 17$, how much money did each book cost?
2 answers:
Answer:
![\mathsf {x = 11}](https://tex.z-dn.net/?f=%5Cmathsf%20%7Bx%20%3D%2011%7D)
Step-by-step explanation:
![\textsf {Let the cost of a single book be x.}](https://tex.z-dn.net/?f=%5Ctextsf%20%7BLet%20the%20cost%20of%20a%20single%20book%20be%20x.%7D)
![\textsf {Formed equation :}](https://tex.z-dn.net/?f=%5Ctextsf%20%7BFormed%20equation%20%3A%7D)
![\implies \mathsf {94 - 7x = 17}](https://tex.z-dn.net/?f=%5Cimplies%20%5Cmathsf%20%7B94%20-%207x%20%3D%2017%7D)
![\implies \mathsf {7x = 77}](https://tex.z-dn.net/?f=%5Cimplies%20%5Cmathsf%20%7B7x%20%3D%2077%7D)
![\implies \mathsf {x = 11}](https://tex.z-dn.net/?f=%5Cimplies%20%5Cmathsf%20%7Bx%20%3D%2011%7D)
Each book costs approximately <u>$11</u>
X=11
After buying
7 books, Sally had
$17 left over from $94
The total amount sally spent on each book would be $11
94-17=77
X= 77 divided by 7 which equals 11
X=11
Hope this helps :)
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