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Gnesinka [82]
3 years ago
8

A metalworker has a metal alloy that is ​25% copper and another alloy that is ​70% copper. How many kilograms of each alloy shou

ld the metalworker combine to create 100 kg of a ​61% copper​ alloy?
Mathematics
2 answers:
Crank3 years ago
7 0

Answer:

The metal worker should use 10 kgs of 25% copper alloy and 40kgs  of 70% copper alloy to make it

Step-by-step explanation:

Archy [21]3 years ago
6 0

Answer:

The metalworker should use 10 kgs of 25% copper  and 40 kgs of 70% alloy to make it.

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The answer will be that out of 36 boys 24 speak french and 12 speak german and out of 24 girls 16 speak french and 8 speak german.

<h3>What is the frequency tree?</h3>

In the question we have that there are 60 students in total out of which 36 are boys:

So number of the girls will be = 60-36=24

Now if 2/3 of the boys speak french the number of the boys who speak french will be = (2÷3)x36=24

Now the number of the boys who speak german will be =36-24=12

Now since 40 students study french so we have the number of the boys who speak french is 24. so the number if the girls who speak french will be =40-24=16

Since there are 24 girls in total and out of them 16 speak french so the remaining girls speak german=24-16=8

Hence answer will be that out of 36 boys 24 speak french and 12 speak german and out of 24 girls 16 speak french and 8 speak german.

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