Question

Ratio of gold and water is 19:1, ratio of copper and water is 9:1

Answer 1

Answer:

hope it's help u.....

Step-by-step explanation:

G = 19W gold is 19 times as heavy as water

C = 9W copper is 9 times as heavy as water

Mixing A pounds of gold with B pounds of copper:

A(G) + B(C) = 15W(A + B)

A(19W) + B(9W) = 15W(A + B)

divide both sides by W

19A + 9B = 15(A + B)

19A + 9B = 15A + 15B

4A = 6B

A = (3/2) * B

for each part of Gold, there needs to be 1.5 parts Copper

Ratio Gold to copper: 1:1.5