Cool treats sold 60 ice cream cones.Single dip cones sold for $2.50 each and double dip cones for $4.15 each.In all $179.70 was taken in for the cones.How many of each size cone were sold?.I was helped for most of it but am stuck at the multiplying part.
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Use the system of equations.
x = single dip
y = double dip
60 = total ice creams
x + y = 60
our second equation would be:
$2.50x + $4.15y = $179.70
you can use the substitution or the elimination method to solve for either x or y.
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I am just now grasping the method . I am stuck at the part of solving for S and D
Let's solve for x = single dip
We will take the easy equation:
x + y = 60
subtract x from both sides
y = 60 - x
now your value for y (in the second equation) is y = 60 -x
Now place it into the second equation:
$2.50x + $4.15(60 - x) = $179.70
this is so much easier to do because now you have only one variable to solve for (x), instead of two ( x and y ).
solve for x and we will move on to the next step.
Do you understand what I just did?
If you don't, then you could ask me what part you're confused on.
The part where I am subtracting the 60 from x?
We want to solve for x, and that will lead us to finding the amount of single dip cones. The reason for why we are isolating y is to get the value of it. Instead of having two variables in front of us, we will have one (and that is x -- the variable that we are solving for).
Therefore, we can plug in y = 60 - x into the second equation where y is (next to $4.15). if you look at that then you can see that there is only x.