Answer to Question #259764 in Algebra for rtf

Question

There are 81 groups of 21 students. When we regroup all of the students so that each group has 5 members, how many students will be left without a group?

Answer 1

the number of students:

$81\cdot21=1701$

after regroup we have:

$1701/5=340$ groups + 1 student

Answer: 1 student will be left without a group