Question

In every gold of gram,a goldsmith mixes 0.25 grams of silver and 0.05 grams of copper. what is the percentage of gold, silver and copper in every gramof gold?

Answer 1

this is the solution

Answer 2

Answer:

The percentage of gold, silver and copper in every gram of gold is 70%,25% and 5%.

Step-by-step explanation:

Given : In every gold of gram,a goldsmith mixes 0.25 grams of silver and 0.05 grams of copper.

To find : What is the percentage of gold, silver and copper in every gram of gold?

Solution :

In 1 gram of gold there is 0.25  grams of silver and 0.05 grams of copper.

So, The amount of gold in the mixture is

$G=1-(0.25+0.05)$

$G=1-0.3$

$G=0.7$

So, There is 0.7 gram of gold, 0.25 grams of silver and 0.05 grams of copper.

The amount in percentage is

$G\%=0.7\times 100=70\%$

$S\%=0.25\times 100=25\%$

$C\%=0.05\times 100=5\%$

Therefore, The percentage of gold, silver and copper in every gram of gold is 70%,25% and 5%.