Ask Singapore Homework?

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



Question

primary 5 | Maths | Percentage
2 Answers Below

Anyone can contribute an answer, even non-tutors.

Answer This Question
AKS
AKS

primary 5 chevron_right Maths chevron_right Percentage

Hi , can someone please help me with this question? Thank you!

Date Posted: 6 years ago
Views: 586

See 2 Answers

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Christmas MT
Christmas Mt's answer
3260 answers (A Helpful Person)
1st
Do note that each row of the model represents the cost of 1 pen, & the shaded area (amount of discount) will add up to allow you to buy 1 more pen for every 5 pens on discount.
Crystal Tham
Crystal Tham
6 years ago
It should be when every 4 pens were given a 20% discount, you will have sufficient funds to buy another pen at a discounted rate (only requires 80%). Similar theory as having 5. Therefore 20 pens is the amount that you can buy from the discounted price. The original number of pens should be 20 - 4 = 16.

Original price should be $28 / 16 = $1.75.
done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Crystal Tham
Crystal Tham's answer
9 answers (Tutor Details)