Weekend combinatorics work problem (IV)

Summary:
Weekend combinatorics work problem (IV) When my daughter (who studies mathematics) and yours truly solve a combinatorics problem together it takes 12 minutes. If my daughter tries to solve the problem herself it takes her 10 minutes more than it takes when I solve it alone. How long does it take me to solve the problem?

Topics:
Lars Pålsson Syll considers the following as important: Statistics & Econometrics

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