Example, the problem of making tea.

For example, it takes 8 minutes to boil water, 1 minute to wash a kettle, 2 minutes to wash a teacup, 1 minute to collect water, 1 minute to find tea, and 1 minute to make tea. The guests are here. How can we arrange for them to have tea as soon as possible? How many minutes does a * * * take?

Problem solving strategy:

First make clear the general order of things (making tea), make clear which things should be done first and which things should be done later, and then consider what else you can do at the same time. Try to do things that can be done at the same time, and reasonable arrangements can save time.

Washing the kettle-receiving water-boiling water (and washing the teacups to find tea)-making tea.

1+1+8+1=11(minutes)

A: A * * * takes 1 1 minute.