A tank was 1/5 full .When another 700 ml of water was poured into the tank , it became2/3 full .Find the capacity

1 answer

Let c be the capacity of the tank

(1/5)x + 700 = (2/3)x
times 15, the LCD
3x + 10500 =10x
7x=10500
x = 1500

The tank holds 1500 ml or 1.5 L