Question

In India for making ornamental gold we use 22 carat gold. This is an alloy of
(1) 22 parts of gold + 2 parts of copper
(2) 19 parts of gold + 3 parts of copper
(3) 18 parts of gold + 4 parts of copper
(4) 17 parts of gold + 7 parts of copper

Answer 1

(1)22 parts of gold + 2 parts of copper