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zvonat [6]
3 years ago
9

The number 6 is 30% of what number

Mathematics
1 answer:
alexandr402 [8]3 years ago
8 0
6 and 3000 is the answer for ur question would be 3000
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A metalworker has a metal alloy that is 15​% copper and another alloy that is 75​% copper. How many kilograms of each alloy shou
lisov135 [29]

48 kilograms of 15 % copper is combined with 72 kilograms of 75 % copper to create 120 kg of a 51​% copper​ alloy

<em><u>Solution:</u></em>

Let "x" be the kilograms of 15 % copper

Then, (120 - x) be the kilograms of 75 % copper

Then, according to question,

"x" kilograms of 15 % copper is combined with (120 - x) kilograms of 75 % copper to create 120 kg of a 51​% copper​ alloy

Thus we frame a equation as:

15 % of x + 75 % of (120 - x) = 51 % of 120

<em><u>Solve the equation for "x"</u></em>

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Thus 48 kilograms of 15 % copper used

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Thus, 72 kilograms of 75 % copper is used

4 0
3 years ago
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