Answer:
3,0
Step-by-step explanation:
Let x=grams of 70% alloy:
0.70x+16×0.20=0.30(x+16)
0.70x=0.30x+4.8-3.2
0.40x=1.6
x=1.6/0.4=16/4=4g
4 grams of 70% alloy are needed.
Answer:
What is the question?
Step-by-step explanation:
Answer:
Divide distance by time.
Step-by-step explanation:
Speed is distance over time. Therefore, dividing distance by time will get you speed.