Answer:A) 2
Step-by-step explanation:
Answer:
1200 ounces
Step-by-step explanation:
How much of an alloy that is 10% copper should be mixed with 600 ounce of an alloy that is 70%copper in order to get an alloy that is 30%copper?
Let us represent
Number of ounce of 10% copper = x
Hence, our Equation =
x × 10% + 600 × 70% = (x + 600) × 30%
0.1x + 420 = (x + 600)0.3
0.1x + 420 = 0.3x + 180
Collect like terms
0.3x - 0.1x = 420 - 180
0.2x = 240
x = 240/0.2
x = 1200 ounces
Answer:
B=10
F=6
Step-by-step explanation:
100%......360
x%............225
x=225*100/360=62.5
so B=62.5% , F=100-62.5=37.5%
37.5/100* n=62.5/100* n - 4
37.5 n/100=(62.5n-400)/100
*100 *100
37.5n=62.5n-400
62.5n-37.5n=400
25n=400
n=400/25
n=16
B=62.5*16/100=1000/100=10
