Copper is 0.2 alloy, zinc is 0.46 alloy, the rest is other metals. What is the mass of the alloy

Copper is 0.2 alloy, zinc is 0.46 alloy, the rest is other metals. What is the mass of the alloy if the mass of other metals is 153g?

Copper – 0.2 alloy;

Zinc – 0.46 alloy;

Dr. metals – 153 g;

Alloy -?

Decision:

1) Let’s find what part of the alloy is copper and zinc:

0.2 + 0.46 = 0.66;

2) We take the mass of the entire alloy as a whole, i.e. for a unit;

3) Find what part of the alloy other metals make up:

1 – 0.66 = 0.34;

4) Find the mass of the entire alloy if 153 grams of other metals correspond to 0.34 parts of the alloy.

To find the number by the size of a given part of it. it is necessary to divide this value by the fraction expressing this part.

153: 0.34 = 15 300: 34 = 450 (g);

Answer: 450 g.