SOLUTION: Chere can do 2 jobs in 3 days, and Stacey can do 5 jobs in 6 days. Chere works for 3 days, and then Stacey begins to help. How many days will it take them working together to do 74

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Question 1024339: Chere can do 2 jobs in 3 days, and Stacey can do 5 jobs in 6 days. Chere works for 3 days, and then Stacey begins to help. How many days will it take them working together to do 74 jobs? -- Thank you for any support :)
Answer by ikleyn(52775) About Me  (Show Source):
You can put this solution on YOUR website!
.
Chere can do 2 jobs in 3 days, and Stacey can do 5 jobs in 6 days. Chere works for 3 days, and then Stacey begins to help.
How many days will it take them working together to do 74 jobs? -- Thank you for any support :)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 

C's rateof-work is 2%2F3 jobs per day.

S's rateof-work is 5%2F6 jobs per day.

Working for 3 days, Chere completed 3%2A%282%2F3%29 = 2 jobs.
And 74 - 2 = 72 jobs remained.

Their combined rate-of-work is 2%2F3+%2B+5%2F6 = 4%2F6%2B5%2F6 = 9%2F6 jobs per day.


The answer to the question is 72 : 9%2F6 = . . . 

Please calculate it yourself.