Tea-making problem 1. Wash the kettle 2. Connect water 3. Boil water (wash the cup to find tea) 4. Make tea1+1=11min.

The problem of pancakes The time it takes to bake two pancakes is equal to the number of pancakes multiplied by the time it takes to bake one side.

The first two odd-numbered cakes are baked into two pieces, and the last three pieces are baked into three pieces.

Time required = the number of pancakes multiplied by the time required to bake one side.

To sum up, the time required for pancake problem = the number of pancakes multiplied by the time required for baking one side.