Question

Hailey paid \$13$13dollar sign, 13 for 1\dfrac3{7} \text{ kg}1 7 3 ​ kg1, start fraction, 3, divided by, 7, end fraction, start text, space, k, g, end text of sliced salami. What was the cost per kilogram of salami

Answer 1

91/10 :)

Explanation:

Answer 2

The cost of per kilogram of salami is = $9.1

Explanation:

Given:

Hailey paid $13 for
`1(3)/(7)` 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
`1(3)/(7)` kg of salami costs = $13

Then 1 kg of salami will cost in dollars will be =
`13/ 1(3)/(7)`

In order to divide by mixed numbers, we will convert mixed numbers to fractions.

⇒
`13/ ((7*1)+3)/(7)`

⇒
`13/ (10)/(7)`

In order to divide by fractions we will take reciprocal of divisor and then multiply.

⇒
`13* (7)/(10)`

⇒
`(13*7)/(10)`

⇒
`(91)/(10)`

⇒
`9.1`

Thus, cost of per kilogram of salami is = $9.1