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primary 6 | Maths
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Yeo
Yeo

primary 6 chevron_right Maths

Anothet rate qns.
Can someone pls help?
Thanks.

Date Posted: 6 years ago
Views: 323
Yeo
Yeo
6 years ago
Can someone draw to illustrate?
Not sure why 270km - 120km (2hr) = 150km.
Why not plus?

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Darren Du Yu Heng
Darren Du Yu Heng's answer
9 answers (Tutor Details)
1st
At 11am, Kathie is 120km from sunville. Perry at sunville.
So from 11am till they meet, Kathie travel 150km and Perry travel 270km.
So the time is 150/60=2.5hr.
(a) Perry speed is 270/2.5=108km/h
(b) 3pm Kathie travel 60x6=360km
3pm Perry travel 108x4=432km
432-360=72km