isabelle bought 4 kg of rice. she cooked 2 cups of rice in the morning and 3 cups in the evening for 5 days. one cup is equal to 1/8 kg of rice. how many kg of rice was left?

Solution:

One day she cooked: (2+3)*1/8 = 5/8 kg

5 days: 5*5/8 = 25/8 kg

so

4- 25/8 = 7/8 kg

so 7/8 kg of rice was left