Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
primary 5 | Maths
| Rate & Ratio
3 Answers Below
Anyone can contribute an answer, even non-tutors.
Please help. Urgent. If possible show working (optional). Take your time!
Date Posted: 2 years ago
Views: 273
45÷(25-20) = 9 min (Ans)
See 3 Answers
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Hope this helps
Date Posted:
2 years ago
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Hope this helps
Date Posted:
2 years ago
Grouping difference question:
Every minute,
printer B prints 25 - 20 = 5 more photos than printer A.
In 2 minutes, printer B prints 5 × 2 = 10 more photos than printer A.
In 3 minutes, 5 × 3 = 15 more photos than printer A.
How many minutes are needed such that printer B prints 45 more photos than printer A?
45 ÷ 5 = 9
9 minutes are needed.
Every minute,
printer B prints 25 - 20 = 5 more photos than printer A.
In 2 minutes, printer B prints 5 × 2 = 10 more photos than printer A.
In 3 minutes, 5 × 3 = 15 more photos than printer A.
How many minutes are needed such that printer B prints 45 more photos than printer A?
45 ÷ 5 = 9
9 minutes are needed.
360 Tutoring Program