It's true: you can use algebra in real life.

If you follow this blog you've probably seen pictures of me making food on a scale. It was making batter for vegetable pakora which uses 3.5 oz. of besan (chickpea flour) and 4.0 oz. water.

Unfortunately, I completely forgot to stop pouring water in and accidentally added 4.9 oz. water. This would make the batter too runny and I'd only made it once before and I couldn't remember exactly how thick it was supposed to be.

Algebra to the rescue!
algebra.jpgAdd 0.8 oz. more besan.