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primary 6 | Maths | Speed
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Syasya
Syasya

primary 6 chevron_right Maths chevron_right Speed chevron_right Singapore

Please help me anyone:) ASAP . Thanks:)

Date Posted: 1 month ago
Views: 18

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J is 20cm/s faster than N, which means every second J will move 20cm more.
J finished the race in 12s. So J moved 20x12=240cm more than N in the 12s.
Since N only completed 2/3 while J finished the race, J moved 1/3 more than N.
So 1/3=240cm
Race=240x3=720cm
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Wei Jie
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