How many units of a 10% solution are needed to prepare 500 units of a 2% solution?

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asked Jul 5, 2018 98.6k views

1 Answer

Pospi · Answer 1 · 2018-07-09T19:15:51+0000

First find how many units of solution there is:

500* 2% = 500(.02) = 10 units

You need 10 units of solution in 'x' units of a 10% solution.

x*10% = 0.1x = 10 units -----> x = 10/0.1 = 100

100 units are needed

How many units of a 10% solution are needed to prepare 500 units of a 2% solution?

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