AC Lim's answer to OBAMA's Primary 6 Maths Speed Singapore question.
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25 mins = 1500 sec
Speed 1 m/s
1 sec → 1m
1500 sec → 1500m
Ravi=7u
Ali =4u
Different 7u-4u=3u
3u=1500m
1u=500m
Ravi =7×500 =3500m
400m →1 complete round
3500m= 3500÷4=8.75 round.
Hence, Ravi completed 8 complete round.
Hope this helps.
Speed 1 m/s
1 sec → 1m
1500 sec → 1500m
Ravi=7u
Ali =4u
Different 7u-4u=3u
3u=1500m
1u=500m
Ravi =7×500 =3500m
400m →1 complete round
3500m= 3500÷4=8.75 round.
Hence, Ravi completed 8 complete round.
Hope this helps.
Date Posted:
4 years ago
Thank you for your help & solution!
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