Q: Rachel solved 5 math problems each minute for 12 minutes before bed, but she didn't finish all of them. The next day, she finished the last 16 problems at lunch. How many math problems did she do in all?
A: Before going to bed, Rachel did a total of 5 × 12 = 60 problems. In total Rachel did 60 + 16 = 76 maths problems. The answer is 76.

Q: James took a job delivering groceries in his neighborhood. He can carry 10 bags on each trip. If he takes 20 trips a day, how many bags does he deliver in 5 days?
A: James delivers 10 x 20 = 200 bags a day. So, he can deliver 200 x 5 = 1000 bags in 5 days. The answer is 1000.

Q: A bird eats 7 berries a day. Samuel has 5 birds. How many berries do Samuel's birds eat in 4 days?
A:
A bird eats 7 x 4 = 28 berries in 4 days. So, 5 birds can eat 28 x 5 = 140 berries in 4 days. The answer is 140.