To find the total volume, add 2/3 and 3/4. Convert 2/3 to 8/12 and 3/4 to 9/12. Then, add 8/12 and 9/12 to get 17/12, which simplifies to 1 5/12 liters. Class 6 NCERT Ganita Prakash Chapter 7 Fractions class 6 Mathematics ...