Question. Archibald eats 1 apple a day for two weeks. Over the next three weeks, he eats the same number of apples as the total of the first two weeks. Over the next two weeks, he eats 3 apples a day. Over these 7 weeks, how many apples does he average a week?
Answer. 10
What step-by-step reasoning justifies that answer?
Reasoning: He ate 14 apples the first two weeks because 14 x 1 = 14. He ate 14 apples in the next three weeks because 14 = 14. He ate 42 apples in the final two weeks because 14 x 3 = 42. He ate 70 apples in total. He averaged 10 apples a week because 70 / 7 = 10.