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In year x, it rained on 40% of all Mondays and 20% of all

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In year x, it rained on 40% of all Mondays and 20% of all

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In year x, it rained on 40% of all Mondays and 20% of all Tuesdays. On what percentage of all the weekdays in year x did it NOT rain?

1) During year x, it rained on 10% of all Wednesdays.
2) During year x, it did not rain on 70% of Thursday and it did not rain on 95% of all Fridays.

OA E.

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In any given year, there will be 52 or 53 Mondays, 52 or 53 Tuesdays, etc.
So, it's impossible to say that it rained on 40% of all Mondays or 20% of all Tuesdays, etc.
For example, if there are 52 Mondays, then 40% of 52 = 20.8, which means that it rained on 20.8 days (impossible).

Cheers,
Brent

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