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arsen [322]
3 years ago
9

In a class of pupils, 13 play the flute and

Mathematics
2 answers:
boyakko [2]3 years ago
6 0

Answer:

35 Pupils

Step-by-step explanation:

You would add up each number: 13 + 12 + 3 + 7 = 35. I Hope This Helps :)

Neporo4naja [7]3 years ago
5 0

Answer:

45

Step-by-step explanation:

13 + 12 + 3 + 7

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Calculate the percentage change (increase or decease) that occurs when:
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The first step is to find the CHANGE. This is done by subtracting the two values and taking the absolute value. Next step is to find the ratio of the change to the original and multiplying by 100% to make it a percentage.

So;

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     ratio of change to original = 35:25,

    multiplying by 100% will give 35/25 × 100% = 140%.

    Hence it is a 140% INCREASE.

b) change = | 30 - 66 | = 36

    the ratio is 36:66

multiplying by 100% = 36/66 × 100% = 0.545454... ×100% ≈ 54.5%

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Step-by-step explanation:

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Step-by-step explanation:

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example, 2,10,21,23,23,38,38

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