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Hayley Diaz
Hayley Diaz

primary 6 chevron_right Maths chevron_right Data analysis chevron_right Singapore

Please help! Thanks!

Date Posted: 1 week ago
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Kok Yen Hau's answer
62 answers (Tutor Details)
Hope this helps. Please upvote if you find this useful.
It can also be solved easily by algebra in sec1 by assuming casey’s speed = X and Jon’s speed = (X +23), then you would have equation 5 (X) = 4 (X +23) and get X =92, where you can calculate PQ = 5X = 460 and PR = 2 PQ = 920 (km)