Answer:
B
Step-by-step explanation:
12%=(3+10%*x)/(20+x)
x=30
add 30 pounds of the second alloy
57-----------------------
Answer:aaaaaaa
Step-by-step explanation:
AAAAAAAAAA
Answer:
x = -4 and y = 1
Step-by-step explanation:
hope this helps please like and mark as brainliest