Respuesta :
Answer:
The cost of per kilogram of salami is = $9.1
Step-by-step explanation:
Given:
Hailey paid $13 for [tex]1\frac{3}{7}[/tex] kg of sliced salami.
To find cost per kilogram of salami.
Solution:
We will apply unitary method to find per kilogram cost of salami.
If [tex]1\frac{3}{7}[/tex] kg of salami costs = $13
Then 1 kg of salami will cost in dollars will be = [tex]13\div 1\frac{3}{7}[/tex]
In order to divide by mixed numbers, we will convert mixed numbers to fractions.
⇒ [tex]13\div \frac{(7\times1)+3}{7}[/tex]
⇒ [tex]13\div \frac{10}{7}[/tex]
In order to divide by fractions we will take reciprocal of divisor and then multiply.
⇒ [tex]13\times \frac{7}{10}[/tex]
⇒ [tex]\frac{13\times7}{10}[/tex]
⇒ [tex]\frac{91}{10}[/tex]
⇒ [tex]9.1[/tex]
Thus, cost of per kilogram of salami is = $9.1
