Question 964075
An alloy of silver and gold consists of 80 ounces, 10 ounces of which are gold. A new alloy is to be recast with an addition of silver. This new alloy also consists of 80 ounces, but is to have only one-fifth of an ounce of gold in 5 ounces. 
What percentage of gold is in the new alloy after the recasting? 
amt of gold in new alloy=(80/5)*(1/5)/80=0.04
What percentage of gold is in the new alloy after the recasting?  4 (ans c.)