A dental office gives away 2 toothbrushes to every patient who visits. His 8 hour days are packed and each visit takes .5 hours. How many toothbrushes does he give in a 5 day work week? Think carefully first, then make a decision:
Each day he does 8 / .5 = 16 visits. So he does 16 * 5 = 80 visits a week. That means he gives away 80 * 2 = 160 toothbrushes a week. So, the answer is 160.