Answer:
63 quizzes
Step-by-step explanation:
Well you would take 54 divided by 6 which is 9 which is the number of quizzes each week then multiply 9 and 7 to get your answer of 63.
i dont know sorry
6⅔ minutes
Or, 6 minutes 40 seconds
X/10 + X/20 = X/T
(2X+X)/20 = X/T
3X/20 = X/T
3/20 = 1/T
T = 20/3
T = 6⅔ mins