Give the step-by-step reasoning process and then the final answer. Running for 2 hours, Jonah burnt 30 calories every hour. How many more calories would he have lost if he would have run for five hours?
When Jonah ran for 2 hours, burning 30 calories every hour, he burnt a total of 2 * 30 = 60 calories. If he had run for five hours, losing 30 calories every hour, Jonah would have burnt 5 * 30 = 150 calories. The difference in the number of calories Jonah would have burnt if he ran for five hours instead of 2 hours is 150 - 60 = 90 calories.
The final answer: 90.