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During the su...

Question

During the summer months, one ice cream truck visits Dipanshu's neighbourhood every 4 days and another ice cream truck visits his neighbourhood every 5 days. If both trucks visited today, when is the next time both trucks will visit on the same day?

A

10

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B

9

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C

20

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D

40

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Solution

The correct option is C
20

Since LCM of 4 and 5 is 20, both ice cream trucks will visit Dipanshu's neighbourhood next time in 20 days.

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