Question

an ornament is made of gold and copper.its total weight is 96g.if 1/12 of ornament is copper,find the weight of both copper and gold in it.

Answer 1

Let the weight of copper be 'x'. Then the weight of gold will be '12x'

$x + 12x = 96$

$13x = 96$

$x = 96/13$

x = 7.38g

So the weight of copper is 7.38 g

Then, the weight of gold will be 12x = 12 * 7.38 = 88.61g

Answer 2

total weight= 96g
copper weight=( 1/12 ×96)g
=8g
weight of gold=(96-8)g
=88