Question

Mai, Abdul, and Chris served a total of 111 orders Monday at the school cafeteria. Abdul served 3 times as many orders as Chris. Mai served 6 more orders
than Chris. How many orders did they each serve?
Number of orders Mal served:
Number of orders Abdul served:
X
5
?
0
0
0
Number of orders Chris served:

Answer 1

Let C = number of orders that chris served

Abdul served 3 times that many so

A = 3C

Mai served 6 more orders than Chris

M = C+6

Together they served 111

A+C+M = 111

3C + C+ ( C+6) = 111

Combine like terms

5C+6 = 111

Subtract 6 from each side

5C+6-6 =111-6

5c=105

Divide by 5

5C/5 = 105/5

C = 21

Mai = C+6 = 21+6 = 27

Abdul = 3*c = 3*21= 63