AC Lim's answer to Royston Lee's Primary 5 Maths Fractions Singapore question.

Ask ManyTutors
done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
AC Lim
Ac Lim's answer
13108 answers (A Helpful Person)
1st
Hope this helps
Royston Lee
Royston Lee
2 years ago
Yup I just solved it too using algebra but I was using the ratio of 5/3 instead, but same same. Any way to solve this without algebra? I can’t seem to find a way.
AC Lim
AC Lim
2 years ago
Understand if use 1 algebra, u is acceptable for P6. Unless using 2 algebra x and y in secondary school.
Royston Lee
Royston Lee
2 years ago
I see. The answer key somehow figured out this by doing:
45/5=9
9*19=171

Any idea how to get 19 units?
AC Lim
AC Lim
2 years ago
Use the difference remain same.
Mean 5u → 45 cm²