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Mathematics, 15.10.2019 10:30 keigleyhannah30

Donna the trainer has two solo workout plans that she offers her clients: plan a and plan b. each client does either one or the other (not both). on friday there were 7 clients who did plan a and 9 who did plan b. on saturday there were 5 clients who did plan a and 3 who did plan b. donna trained her friday clients for a total of 12 hours and her saturday clients for a total of 6 hours.
how long does each of the workout plans last?

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