Stream of consciousness rationale: Jerome rides a total of 12 x 12 = 144 miles in 12 days. So, he will ride 150 - 144 = 6 miles on the 13th day to finish his goal.
The question and answer pair are described below.
Q: Jerome is taking a 150-mile bicycle trip. He wants to ride 12 miles for 12 days. How long will he ride on the 13th day to finish his goal?
A: 6