AC Lim's answer to Mandy's Primary 6 Maths Speed Singapore question.
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Hope this explanation clear enough for your understanding. Hope this helps.
Date Posted:
4 years ago
After analyse, still cannot understand why 2s I failed to see any indication of being half. Pls advise. Tks.
If Speed for Sam = S
Therefore speed for Jane should be = S+20
Total both = S+S+20 = 2S + 20. Cause they are going opposite way. The speed is increased. Mean faster to complete the 330km.
Therefore speed for Jane should be = S+20
Total both = S+S+20 = 2S + 20. Cause they are going opposite way. The speed is increased. Mean faster to complete the 330km.
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