Ask Singapore Homework?

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



Question

primary 6 | Maths | Percentage
2 Answers Below

Anyone can contribute an answer, even non-tutors.

Answer This Question
Mandy
Mandy

primary 6 chevron_right Maths chevron_right Percentage chevron_right Singapore

Can anyone use model ruler and simple algebra method to help me solve the problem. I noticed can make use of 40 percent and one quarter to link the remainder but got stuck in someway. Tks

Date Posted: 4 years ago
Views: 292

See 2 Answers

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Pancakes
Pancakes's answer
58 answers (A Helpful Person)
done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
AC Lim
Ac Lim's answer
12085 answers (A Helpful Person)
1st
Hope this helps
Mandy
Mandy
4 years ago
May I know why 40 percent and 50 are refected on the model ruler ? 40 percent of the woman is 50 , Why mention 40 percent again? Tks
AC Lim
AC Lim
4 years ago
This is how percentage work....
Women have 2 parts here.
One part is same as men 100u
2nd part is 125
40% of women, refer to both parts.
100u -40u =60u
125-40%of 125= 75.

Imagine you have 2 cakes
Each have 10u
10u + 10u = 20u
When 40% of cake given away.
40/100= 4/10= 4u
U need to remove both
(10u -4u) + (10u-4u) = 12u
Calculation left 12u/20u x 100% = 60%. Meaning, 40% removed.
If u just remove one of the cake 4u, left 16u.
Calculation = 16u/20u x100% = 80% remaining. In other word, just 20% removed.