MA-419
HCF and LCM
Lower Sec Maths · Secondary 1 · Hard · HCF and LCM
Three runners start together on a circular track.
Runner A takes 60 s, Runner B takes 75 s and Runner C takes 90 s to complete one round.
After how many seconds will they next all be at the starting point together?
Runner A takes 60 s, Runner B takes 75 s and Runner C takes 90 s to complete one round.
After how many seconds will they next all be at the starting point together?
- 450 s
- 600 s
- 750 s
- 900 s
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