6 MATH CHALLENG Mr. Jacob's class has silent reading for twenty minutes every day after lunch recess. Mrs. Clark's class has sil
ent reading on Monday, Wednesday and Friday for half an hour. In four weeks, how many more minutes will the students in Mr. Jacob's class spend reading than the students in Mrs Clark's class?
I believe it is B, as C and D both are based on the number of books sold while the only variable to determine the amount of money she earns are the additional doors she knocks on.