Question

If 5 deli sandwiches cost 29.75, how much will 8 sandwiches cost?

Answer 1

$47.06 would be the total of each sandwich, each sandwich would be $5.95 each so we know that for 5 sandwiches the total is $29.75 so we add $17.85 more and it would give you the total of $47.06.

Answer 2

Answer: $47.60

Explanation:

Equation for direct variation between two variables x and y .

`(x_1)/(y_2)=(x_2)/(y_2)` (1)

We assume that the cost of sandwiches is directly proportional to the number of sandwiches .

Given : 5 deli sandwiches cost $29.75.

To find : Cost of 8 sandwiches.

Put
`x_1=5 ,\ y_1=29.75 ,\ x_2=8,\ y_2=y` in equation (1)

`(5)/(29.75)=(8)/(y)\\\\\Rightarrow\ y=(8*29.75)/(5)\\\\\Rightarrow\ y=47.60`

Hence, the cost of 8 sandwiches = $47.60