Ask Singapore Homework?

Upload a photo of a Singapore homework and someone will email you the solution for free.



Question

primary 6 | Maths
One Answer Below

Anyone can contribute an answer, even non-tutors.

Answer This Question
Shelia
Shelia

primary 6 chevron_right Maths

Pls help

Date Posted: 6 years ago
Views: 351

See 1 Answer

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Willy Sim
Willy Sim's answer
608 answers (Tutor Details)
1st
Hope this helps
Shelia
Shelia
6 years ago
Thank you. How do you get 5u for blue straws, 6u for red and 9u for green.
Willy Sim
Willy Sim
6 years ago
If the bar is 20u, 1/4 of the 20u is 5u. Left with 15u. 2/5 of the 15u is 6u and left with 9u.
Willy Sim
Willy Sim
6 years ago
Hope this explains. Ask me if you are still not clear.
Shelia
Shelia
6 years ago
Can I know how u derive the 20u?
Willy Sim
Willy Sim
6 years ago
The ratio 2:3 is actually 2/5 and 3/5. Together with the 1/4, the lowest common multiple of 4 and 5 is 20. That is why I used 20u.