whats the value of n
Three tanks A,B and C are used to store oil. Tank A contains "n" litres of oil. Tank B contains (n+150) litres of oil. Tank C is empty. Oil is pumped from Tank A and from Tank B into Tank C so that all three Tanks contain the same amount of oil. 500 litres of oil are pumped from Tank A into Tank C. Workout the value of "n"