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GaryK [48]
3 years ago
6

How can you solve problems involving percents

Mathematics
1 answer:
Svetllana [295]3 years ago
6 0
You could set up a proportion. For example, what is 20% of 40
is     %
--- = ----
of    100
is/40=20/100=1/5
5*8=40
8 would be the answer.
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Answer:

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Step-by-step explanation:

Set up a system of equations :D

let x represent pencils

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2x + 3y = 0.78

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Because we are only interested in pencils we will solve for x first.

Isolate y in either equation, lets do the first one.

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~
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