31. of the 27 students in jarrod's class, 18
receive an allowance each week. what
fraction of the students, in simplest
form, receive an allowance?

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

6. sarah saved $12.75 every week for a number of weeks, w. she received an additional $25 during the last week in which she saved money. write and solve an equation to find the number of weeks, w, for which sarah had saved money if she has $114.25 now.

Sections of prefabricated wood are each 5 1/3 feet long. how long are 7 1/2 sections placed end to end?