A few days ago
Anonymous

Word Problem please help?

How much pure water must be mixed with 3 pints of 90% developer to produce a mixture that is 17% developer???

please show work.

Top 1 Answers
A few days ago
norcekri

Favorite Answer

The method is straightforward, once you learn to think like developer. 🙂

First of all, note that you’re not changing the amount of developer. Therefore, you should compute the amount of developer you have: 90% of 3 pints. The other 10% is the starting amount of water.

Now, that amount of developer would be 17% of how much total solution? The difference between that and 3 pints is the amount of water you need to add.

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