AC Lim's answer to Clarine Peh's Primary 6 Maths Speed Singapore question.
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Vincent: 24km/h: 3
Sarah: 16km/h : 2
Ratio Vincent: Sarah = 3:2
Different = 1u
Distance: Sarah
Time : 45 min = 0.75h
Speed: 16 km/h
Distance = 0.75 x 16 = 12km
Therefore 1u= 12km
Total distance = 3u =3x12 = 36km
Sarah: 16km/h : 2
Ratio Vincent: Sarah = 3:2
Different = 1u
Distance: Sarah
Time : 45 min = 0.75h
Speed: 16 km/h
Distance = 0.75 x 16 = 12km
Therefore 1u= 12km
Total distance = 3u =3x12 = 36km
Date Posted:
5 years ago
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