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Ratling [72]
3 years ago
5

80% of what number is 15?

Mathematics
1 answer:
Kazeer [188]3 years ago
3 0
15 = 80% * x

15 = 80/100 * x

15 = 8/10 * x

x = 15 * 10/8

x = 150/8

x = 18.75


<span>80% of 18.75 is </span>15<span>.</span>
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S is the three digit number.
h - a number of hundreds
t - a number of tens
o - a number of ones

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</span>t + o = 10          ⇒ o = 10 - t
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_______
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_______
10 - t = 8 - (12 - t)
10 - t = 8 - 12 + t
10 - t = -4 + t
10 + 4 = t + t
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______

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______

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