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Mathematics 8 Online
OpenStudy (anonymous):

An alloy of tin is 15% tin and weighs 20 pounds. How many pounds of tin are in the alloy? 3 lb 15 lb 20 lb

OpenStudy (anonymous):

3lb?

OpenStudy (ja1):

15% of 20 = ?

OpenStudy (anonymous):

1.333333333333333333333333333333333333????????

OpenStudy (ja1):

15/100 = ?

OpenStudy (anonymous):

0.15

OpenStudy (ja1):

You always do x/100

OpenStudy (ja1):

Yes and now you multiply by the amount you are trying to find, 20

OpenStudy (anonymous):

so 3

OpenStudy (ja1):

So it is: \[\frac{ 15 }{ 100 } * 20 = ?\]

OpenStudy (ja1):

Yupp :)

OpenStudy (anonymous):

thts waht i thought

OpenStudy (ja1):

Yes I was explaining to you the system to finding it :)

OpenStudy (anonymous):

yesh i no thanks

OpenStudy (ja1):

Np :)

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