Question

The ratio of gold and copper in an ornament is 93:7.if the weight of ornament is 30 g, find the weight of copper in the ornament.

Answer 1

Answer:

wieght of copper = 2.1 g

Step-by-step explanation:

let gold = 93x

let Copper - 7x

93x+7x = 30g

100x = 30g

x= 30/100= 3/10 g

weight of Copper = 7x3 / 10

= 21/10 = 2.1g