Madison and Jim paid $21.08 for 1 large pizza, 2 salads with the same price. The pizza cost $11.70, which was 3 times as much as the cost of one salad. They also used a coupon for $2 off their purchase. What was the cost of one drink?
clearly the salad cost $11.70/3 = $3.90
that means if the drink cost $d,
11.70 + 2*3.90 + d = 21.08 + 2.00
now just solve for d
I guess they shared the drink, eh?
my son's 5th grade HW assignment
uh, ok.
thanks Steve
To find the cost of one drink, we first need to determine the cost of one salad. Let's set the cost of one salad as 'x'.
Given that the pizza cost $11.70, which is 3 times the cost of one salad (x), we can write the equation:
11.70 = 3x
Next, we know that Madison and Jim paid $21.08 in total. This includes the cost of the pizza, two salads, and one drink. We also know that they used a coupon for $2 off their purchase. Therefore, the total cost can be expressed as:
(11.70 + 2) + (2x + 2x) + y = 21.08
where y represents the cost of one drink.
Simplifying the equation, we have:
13.70 + 4x + y = 21.08
Now, let's isolate the variable 'y' by subtracting 13.70 + 4x from both sides of the equation:
y = 21.08 - 13.70 - 4x
Simplifying further, we get:
y = 7.38 - 4x
Therefore, the cost of one drink is $7.38 minus 4 times the cost of one salad.