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light a flashes every 5 seconds Light b flashes every 6 seconds light c flashes every 7 seconds work out how long it will take for all of them to flash
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17 votes
light a flashes every 5 seconds Light b flashes every 6 seconds light c flashes every 7 seconds work out how long it will take for all of them to flash

User Berrytchaks
by
4.8k points

1 Answer

9 votes

Answer:

210 seconds

Explanation:

LCM of 5,6 and 7

User Talitha
by
4.6k points
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