The 80-milliliter solution of sugar and water is 20% sugar

The 80-milliliter solution of sugar and water is 20% sugar. How much water (in milliliters) must be added to make a solution that is 5% sugar?

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #47831