Question

The ratio of the weights of copper and zinc in brass is 13:7.Find the weight of zinc in a brass utensil weighing 700g​

Answer 1

Resposta:

Coper = 455g

Zinc = 245g

Explicação passo-a-passo:

c + z = 700

c/z = 13/7

c = 13/7z

13/7z + z = 700

13z + 7z = 4900

20z = 4900

z = 245

c = (13 x 245) / 7 = 455