Shawn's answer to Candy's Primary 3 Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Shawn
Shawn's answer
82 answers (A Helpful Person)
1st
Initially A and B has equal amount of students, both at 1 unit each.

After 16 students left from A to join B, A becomes 1 unit while B becomes 3 units (B has 3 times as much as A).

1 unit = 16
4 units = 16 x 4
= 64
Initially both has equal amount,
64 / 2 = 32 students each.