[Question]Ellen is baking bread. It takes 3 hours to rise 1 ball of dough, and then another 2 hours to bake it. If she makes 4 balls of dough one after another and then bakes them one after another when they're done rising, how many hours will it take?
[Answer]Ellen takes 4 * 3 = 12 hours in total to rise all balls of dough. It will take 4 * 2 = 8 more hours to bake each one. It will take her 12 + 8 = 20 hours to make all of the bread. The answer is 20.

[Question]Ricciana and Margarita joined in their school's long jump event. Ricciana ran and jumped a total of 24 feet - 20 feet for running and 4 feet for jumping. Margarita ran for 18 feet and jumped 1 foot less than twice Ricciana's jump. How much farther did Margarita run and jump than Ricciana?
[Answer]Twice the distance of Ricciana's jump is 4 x 2 = 8 feet. So, Margarita jumped 8 - 1 = 7 feet. Margarita ran and jumped for 18 + 7 = 25 feet in all. So, Margarita ran and jumped 25 - 24 = 1 foott more than Ricciana. The answer is 1.

[Question]On Rudolph's car trip across town, he traveled 2 more than 5 miles and encountered 3 less than 17 stop signs. How many stop signs per mile did Rudolph encounter on his trip across town?
[Answer]He traveled 2 more than 5 miles, or 5 + 2 = 7 miles. He encountered 3 less than 17 stop signs, or 17 - 3 = 14 stop signs. Thus, during his trip across town, Rudolph encountered 14 / 7 = 2 stop signs per mile. The answer is 2.

[Question]James takes 20 units per semester at community college. If each unit costs $50 how much does he pay for 2 semesters?
[Answer]
He pays 20 * 50 = $1000 per semester. So he pays 1000 * 2 = $2000. The answer is 2000.