Answer:
We can take the following example-
1. Rachael bought 10 yards of spool of ribbon. She cut 1/5 yd of ribbon from the spool in the morning. In the afternoon she again cut 7/10 yd of ribbon from the spool. How much ribbon is left?
2. Kim is icing 30 cupcakes. She spreads mint icing on 1/5 of the cupcakes and chocolate on 1/2 of the remaining cupcakes. The rest she spreads with vanilla frosting. How many cupcakes have vanilla frosting?