Evelyn and Meredith decided to kayak 1 mile up and then back in the Humboldt channel. The rate of the water flowing in the channel was 2 miles per hour. The total time it took them to kayak up and back was 3 hours and 40 minutes. Assuming they were padding their double kayak at a fairly consistent rate, find the rate Evelyn and Meredith were paddling.

Step 1 - Draw a picture to model the problem.
Step 2 - Label variables and create a table.
Step 3 - Write an equation to model the problem.
Step 4 - Solve the equation. Provide supporting work and detail.
Step 5 - Explain the results.