Question

Time Allowed: 180 minutes
12. A jar one fifth filled with water weighs 560 g. The same jar four fifths filled with water
weighs 740 g. What is the weight of the empty jar?​

Answer 1

Step-by-step explanation:

When a jar is one-fifth filled with water, it weighs 560 g. When the same jar is four-fifths filled with water, it weighs 740 g. What is the weight of the empty jar? The information in the question tells us that the amount of water that would fill three-fifths of the jar weighs (740 − 560) g = 180g.