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BartSMP [9]
3 years ago
9

What are two ways to find 35% of 700

Mathematics
1 answer:
garik1379 [7]3 years ago
4 0

Question

What are two ways to find 35% of 700


Step-by-step explanation:

First way

700 : 100 = x : 35

x = 700 * 35 : 100

x = 245

Second way

700 : 100 * 35 =

245

Another way

700 * 0.35 =

245




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Step-by-step explanation:

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A metalworker has a metal alloy that is 15​% copper and another alloy that is 60​% copper. How many kilograms of each alloy shou
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<u>Step-by-step explanation:</u>

Let x = kg of 15% copper alloy

Let y = kg of 60% copper alloy

Since we need to create 90 kg of alloy we know:

x + y = 90

51% of 90 kg = 45.9 kg of copper

So we're interested in creating 45.9 kg of copper

We need some amount of 15% copper and some amount of 60% copper to create 45.9 kg of copper:

0.15x + 0.60y = 45.9

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substituting that value in for x

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Therefore, in order to create 90kg of 51% alloy, we'd need 18 kg of 15% copper and 72 kg of 60% copper.

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Sum of linear pair of angles = 180°

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