Answer:
$3.90 was the cost of salami per kilogram.
Explanation:
The question is incomplete, so the complete question is below:
![Hailey\ paid\ \$13\ for\ 1\ 3/7\ kg\ of\ sliced\ salami.\ \\What\ was\ the\ cost\ per\ kilogram\ of\ salami?](https://img.qammunity.org/2021/formulas/mathematics/high-school/nic65gkmppgze1dubfy3dgr0s56mk1t3b6.png)
Now, to find the cost of salami per kilogram.
Cost of
kilogram of sliced salami = $13.
Now, to get the cost of salami per kilogram we use unitary method:
If, the cost of
kilogram of salami = $13.
Then, the cost of 1 kilogram of salami =
![=(13)/(10)* 3](https://img.qammunity.org/2021/formulas/mathematics/high-school/ncqqgytn3b9ke5yjwhfsde5qbaak75ebvz.png)
![=(39)/(10)](https://img.qammunity.org/2021/formulas/mathematics/high-school/te270cdnhgv904ff1eq9e1zoeswui4gce7.png)
![=\$3.90.](https://img.qammunity.org/2021/formulas/mathematics/high-school/n331w88g9wcjyce76wuvakf3n2x6ey4buf.png)
Therefore, $3.90 was the cost of salami per kilogram.