Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
primary 6 | Maths
One Answer Below
Anyone can contribute an answer, even non-tutors.
It would be great to help out with this question with an explanation. Thank you
Date Posted: 1 month ago
Views: 49
See 1 Answer
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Since Jacki started 6min later, we have to find out in the first 6min what is the distance Henry have already covered in that 6min, which is 6.5km.
since they later past each other at the midpoint, town A to midpoint and town B to midpoint is 19.5km.
19.5km - 6.5km = 13km, Henry covers this 13km in the same time that Jacki cover 19.5km in order for them to past each other.
We find the time taken by Henry to cover 13km, whihc is 1/5h. So Jacki would also take 1/5h to cover 19.5km. Then we can find Jacki's speed, 97.5km/h.
since they later past each other at the midpoint, town A to midpoint and town B to midpoint is 19.5km.
19.5km - 6.5km = 13km, Henry covers this 13km in the same time that Jacki cover 19.5km in order for them to past each other.
We find the time taken by Henry to cover 13km, whihc is 1/5h. So Jacki would also take 1/5h to cover 19.5km. Then we can find Jacki's speed, 97.5km/h.
Date Posted:
1 month ago
Thank you very much for the clear explanation. Good day.
360 Tutoring Program