Edward the plumber is replacing a pipe in a bathroom wall

Edward the plumber is replacing a pipe in a bathroom wall. He needs to use 40 feet of copper pipe to complete the job. For every 5 feet of pipe, Edward must use one tightening bolt, and for every bolt, he uses two washers. He buys a bag of 20 washers for the job. After he completes the bathroom job, how many washers will be remaining in the bag?

GSM8K — Grade School Math 8K (Cobbe et al., OpenAI, 2021) · train #1906