A mean average of 60 on 7 exams is needed to pass a course. on his first 6 exams, Adam received grades of 46,74,70,59,66 and 72. if his lowest grade of the exams already taken is to be dropped,what grade must he receive on his last exam to pass?

to AVG at least a 60 his total test scores must add up to 420 b/c 420/7=60. therefore you can add his current test scores and then subtract that number from 420 to find the minimum he can receive on the 7th test