Question 59
When a water-tank is $30\%$ empty it has $30$ litres more in it than when it is $30\%$ full. How many litres can the tank hold when it is full?
MathNet 2015-part-06 — 191 problems (EN–VI) Question 59
Math Olympiad Vault · MathNet 2015-part-06 — 191 problems (EN–VI)