Melissa 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 Wednesday there were 2 clients who did Plan A and 3 who did Plan B, On Thursday there were 6 clients who did Plan A and 5 who did Plan B. Melissa trained her Wednesday
clients for a total of 6 hours and her Thursday clients for a total of 12 hours. How long does each of the workout plans last?

false

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i'm sorry i don't know

step-by-step explanation:

there is only one way to arrange all the eight relative to each other because they are not distinct. we have

now there are nine places to place an (and not more than one in one place).   because we have four symbols, we need to choose four of these nine places to insert an . order does not matter because the are not distinct.

thus there are 1 · c(9,4) ways, or, if we calculate it,

thus there are 126 ways to form such "words."