kimi's answer to Law's Secondary 1 Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
kimi
Kimi's answer
4 answers (Tutor Details)
1st
Since there is 40 students, you can total up the number of students from day 0 to day 3 and then use 40- ( the total number of students from day 0-3) and its the answer which is 3