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Sam blinks every 15 seconds and Martha blinks every 10 seconds. They blink together at midnight. How many seconds will pass before they blink together again
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4 votes
Sam blinks every 15 seconds and Martha blinks every 10 seconds. They blink together at midnight. How many seconds will pass before they blink together again

User Renier Botha
by
7.9k points

2 Answers

4 votes

Answer:

30 seconds will pass before they blink together again.

Explanation:

LCM of 15 & 10 is 30

User Taurayi
by
8.0k points
3 votes
they will blink together every 30 seconds.

User Iffat Fatima
by
8.1k points
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