First we are going to set up two equations:
1)
2)
where x is the number of hotdogs sold, and y is the number of sodas sold. Let's subtract x from the second equation and set equal to 0:
Then let's add the two equations together to cancel out the y variable:
+
---------------------------------
Then solve for x:
So then return to equation 1 and plug in x to solve for y:
So then we know that x = 42 and y = 126; therefore, there were 42 hotdogs sold, and there were 126 sodas sold.
Answer:
10 pounds of dog food.
Step-by-step explanation:
You can find this answer by multiplying 1/4 to 40
Because
There is 40 small dogs and each eats 1/4 of dog food