Solve the question

Question

A jeweler has 7 rings, each weighing 11g, made of an alloy of 15% silver and 85%gold. He decides to melt down the rings and add enough silver to reduce the gold content to 70%. How much silver should he add?

write an equation for the total amount of gold in the mixture using s to represent silver.

solve the equation for s.

Answer 1

Step 1:

A jeweler has rings, each weight is .

Total rings weight is .

Its made of an alloy of silver and gold.

He decides to melt down the rings and add enough silver to reduce the gold content to .

Let, represent silver.

The equation is .

Find the how much silver should be added.

Solve the equation.

Solution:

silver should be added to reduce the gold content to .