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Question

Maria has finished 80% of her classwork.

Express her percentage of finished classwork as a fraction in the simplest form.


A
35
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B
14
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C
25
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D
45
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Solution

The correct option is D 45
Let's convert 80% to a fraction.

A percent is 1 part out of 100.
1%=1100
80%=80×1100 =801×1100 =80×11×100 =80100

Simplifying the fraction, we get
80100=2×2×4×52×2×5×5
Cancel out the common factors, we get
=45
So, Maria has finished 45 of her homework.

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