The cost per liter of petrol during a 4 year period is…

The cost per liter of petrol during a 4 year period is as follows: Year 1, $1 per liter ; Year 2, $1.5 per liter ; Year 3, $1.2 per liter ; Year 4, $2 per liter . If a factory spent equal dollars on petrol each year, what was the average cost of a liter of petrol during the 4 year period?

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #95719