A 30% solution of barium chloride is mixed with 10 grams of…

A 30% solution of barium chloride is mixed with 10 grams of water to form a 20% solution. How many grams of original solution did we start with ? I am trained to complete above problem as per following technique. Is it possible to solve in following manner. 30%_________100% ______20% ratio is 100-20 : 20-30, which is wrong. There should not be 20. Instead, value in the middle should be in between 30% to 100%.

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #30043