From the calculations below, 56.43 pounds of 0.26 copper, and 1.57 pounds of 0.63 copper are used.
Let A represents pounds of 0.26 copper and B represents pounds of 0.63 copper are used to make 58 pounds of 0.27 copper.
Therefore, we can use simultaneous equations as follows:
A + B = 58
A = 58 – B ………………………………….. (1)
Also, we have:
0.26A + 0.63B = 0.27 * 58
0.26A + 0.63B = 15.66 ……………………….. (2)
Substituting for A from equation (1) into (2) solve for B, we have:
0.26(58 – B) + 0.63B = 15.66
15.08 – 0.26B + 0.63B = 15.66
0.37B = 15.66 – 15.08
0.37B = 0.58
B = 0.58 / 0.37
B = 1.57 pounds
Substituting for B in equation (1), we have:
A = 58 – 1.57
A = 56.43 pounds
Learn more about simultaneous equations here: https://brainly.com/question/16763389.
#SPJ1
