A Goldsmith mixes gold and copper in the ratio 7:2 to prepare an ornament. if the ornament weight 45grames find the weight of gold and copper in it
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Calculation of Weight
Answer: Weight of the Gold is 35 grams
And Weight of the Copper is 10 grams
Explanation:
Given that ratio of Gold and Copper used by gold smith to prepare ornament is in ratio 7 : 2
Total weight of the ornament = 45 grams
As ratio of Gold and Copper is 7 : 2 ,
lets assume Weight of Gold = 7x grams and Weight of Copper = 2x grams
Weight of Gold + Weight of Copper = Weight of Ornament prepared
⇒ 7x + 2x = 45
On solving above expression for x , we get
9x = 45
⇒ x = 45/9
⇒ x = 5
Weight of the Gold = 7x = 7 × 5 = 35 grams
And Weight of the Copper = 2 x 5 = 10 grams
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