Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
primary 5 | Maths
| Whole Numbers
One Answer Below
Anyone can contribute an answer, even non-tutors.
Hi i dont quite umderstand the question can someone help me? would be appreciated!
Date Posted: 5 years ago
Views: 515
Mr Lee : 56 years old
Sam : 4 years old
Difference = 56 - 4 = 52 years
When Mr Lee is 5 times as old as Sam, the difference in their age is still 52 years as it doesn't change.
So Mr Lee → 5u
Sam → 1u
Difference → 5u - 1u = 4u
4u = 52 years
1u = 52 ÷ 4 = 13 years
Mr Lee's age at that time
= 5 x 13 years
= 65 years
Since he is now 56 years old,
65 - 56 = 9
It will be in 9 years' time
Sam : 4 years old
Difference = 56 - 4 = 52 years
When Mr Lee is 5 times as old as Sam, the difference in their age is still 52 years as it doesn't change.
So Mr Lee → 5u
Sam → 1u
Difference → 5u - 1u = 4u
4u = 52 years
1u = 52 ÷ 4 = 13 years
Mr Lee's age at that time
= 5 x 13 years
= 65 years
Since he is now 56 years old,
65 - 56 = 9
It will be in 9 years' time
See 1 Answer
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Hope this helps
Date Posted:
5 years ago
360 Tutoring Program