A metalworker has a metal alloy that is 30% copper and another aloy that is 75% copper. How many kilograms of each alloy should the metalworker combine to create 60 kg of a 66% copper alloy? The metalworker should use kilograms of the metal alloy that is 30% copper and kilograms of the metal alloy that is 75% copper.
(Type whole numbers)

explanation:

step-by-step explanation:

6 equilateral triangles

fabric (square meters)                   cloaks

7                                                           21

4/3                                                         4

step-by-step explanation:

we are told that harry needs 2 square meters of fabric for every 6 wizard cloaks he makes.

1. first of all we will find how many cloaks can be made from 1 square meter of fabric by dividing 6 by 2.

we can see that 3 cloaks can be made from 1 square meter of fabric. now we will multiply 3 by 7 to find number of cloaks made from 7 square meters of fabric.

therefore, harry will make 21 cloaks from 7 square meters of fabric.

2. let us find how many square meters of fabric will be needed to make 4 cloaks.

first of all we will find fabric needed for 1 cloak by dividing 2 by 6.

we can see that fabric needed for 1 cloak is   square meter. now we will multiply   by 4 to find fabric needed for 4 cloaks.

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