Ask Singapore Homework?

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



Question

primary 6 | Maths | Ratio
One Answer Below

Anyone can contribute an answer, even non-tutors.

Answer This Question
Tess
Tess

primary 6 chevron_right Maths chevron_right Ratio chevron_right Singapore

Please help ><

Date Posted: 7 months ago
Views: 31
J
J
7 months ago
Blue : 4 units
Red : 7 units

Difference = 3 units
There are 3 more units of red than blue buttons

For the newly bought buttons,
Blue = 29
Red = 8

Difference = 21 buttons
There were 21 more blue buttons than red buttons bought.

Since the number of red and blue buttons is the same in the end, the difference must be 0.

So, the difference at first must be equal to the difference of the buttons bought.

This is to get to the same number of blue and red buttons.


21 buttons = 3 units
1 unit = 7 buttons

Number of buttons at first
= 11 units
= 11 x 7 buttons
= 77 buttons

See 1 Answer

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Brendon Choo
Brendon Choo's answer
2 answers (Tutor Details)
1st
Hope u understand