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The sixth graders have a math test and science test today. They have a science test every 9 schools days and a math test every 6 school days. In how many days will tests fall on the same day again?
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The sixth graders have a math test and science test today. They have a science test every 9 schools days and a math test every 6 school days. In how many days will tests fall on the same day again?

User Mario Abbruscato
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1 Answer

7 votes
In 18 days because the LCM of the two is 18.
User Shantanu Kher
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