Question

a lump composed of gold and silver measures 6 cubic cm weighs 100 gm.of a cubic cm of gold weighs 20 gm and an equal volume of silver weighs 12 g.find the weight of gold in the mixture​

Answer 1

Step-by-step explanation:

Given  

a lump composed of gold and silver measures 6 cubic cm weighs 100 gm. If a cubic cm of gold weighs 20 gm and an equal volume of silver weighs 12 g. Find the weight of gold in the mixture.

• Average weight per cubic cm = 100/6 gram
• Gold per cubic cm = 20 gram
• Silver per cubic cm = 12 gram
• The ratio of gold and silver in a lump using Alligation method = 7 : 5
• Therefore gold is 7/12 x 6 cu cm
•                          = 3 1/2 cu cm
• Now weight of gold in the lump = 3 1/2  x 20 = 70 grams
• Reference link will be
• https://brainly.in/question/4064300