There are 12 rulers in a package and 8 compasses in apackage. The teacher wants to buy the same number of rulers as compasses. How many packages of rulers and compasses should the teacher buy if there are 20 students and she needs at least one compass and ruler set per student?

Question

radar · Answer

2 packs of rulers and 3 packs of compasses shold do it.

radar · Answer

She would have 24 of each and enough for one for each student and 4 left over.

anonymous · Answer

let  x be ruler package and y be compass package

12x=20
x=1.67 so we need 2 ruler packages

8y=20
 y=2.5 so we need 3 compass packages.