Question

MY LAST QUESTION HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing
50 grams of an alloy containing 12% copper with 78 grams of an alloy containing 92% copper. Answer the questions below. Do not do any rounding.

a) How many grams of copper are in the resulting mixture?

b) What percentage of the resulting mixture is copper?

Answer 1

a- the grams of copper is total which is 128 grams.*** b- is the total amount of percent of copper which is 71.76%+9.37