Emily has 32 grams of a 25% sugar syrup, but this is just too sweet for her! How much pure water should she add to have a 10% syrup?

By this information, we know: (just so you know, when I will write the equation, the multiplication sign will be ^)

25%+0%=10%

32g xg (32+x) g

Now, we create an equation:

(0.25^32) + (0^x) = 0.1^ (32+x)

8+0=3.2+0.1x

8=3.2+0.1x

4.8=0.1x

48=x

Answer: 48 gram.