Answer:
50c = 25
20c = 5
Step-by-step explanation:
50x + 20y = 1350 (1) - multiply y by one.
x + y = 30 (2) - multiply y by 20.
50x + 20y = 1350 (1)
20x + 20y = 600 (2)
If you treat it like simultaneous equations, you take away equation 2 from equation 1.
30x = 750
x = 25
Then, once you have your value of x, you can substitute it back into the original equations to find your answer.
x + y = 30
25 + y = 30
y = 5
Then you have your answer. Hope this helps :)
