Answer:
40
Step-by-step explanation:
Step 1:
100 + x + 2y = 200 Equation
Step 2:
100 + 20 + 2y = 200 Substitute x
Step 3:
120 + 2y = 200 Add
Step 4:
2y = 80 Subtract 120 on both sides
y = 40 Divide
Hope This Helps :)
