Problem #2: A group of 148 people is spending five days at a summer camp. The cook ordered 12 pounds of food for each adult and 9 pounds of food for each child. A total of 1,410 pounds of food was ordered. What is the total number of adults and total number of children in the group?
X + Y = 148 Let X = the number of adults and Y= the number of kids 12X + 9Y = 1,410 The 2nd equation will be the lbs of food ordered
-9(X + Y = 148) Multiply by a number to get a negative X or Y
12X + 9Y = 1,410 Line the equation up and Y cancels out