SOLUTION: Ann and bob have started their own business making hand-made greeting cards. Ann can make a card in ten minutes while it takes bob six minutes to make the same card. They recently

Algebra ->  Rate-of-work-word-problems -> SOLUTION: Ann and bob have started their own business making hand-made greeting cards. Ann can make a card in ten minutes while it takes bob six minutes to make the same card. They recently       Log On


   

Question 892417: Ann and bob have started their own business making hand-made greeting cards. Ann can make a card in ten minutes while it takes bob six minutes to make the same card. They recently received an order for 90 custom cards. If they start working on the order together at 7:30am and take one 15 minute break at 9:00am at what time will they finish the order?
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
This solution focuses just on the work time, not on time of the day:

1 job is, "make a card".
RATES of WORK:
Ann, 1%2F10
Bob, 1%2F6
Ann&Bob, 1%2F10%2B1%2F6=%286%2B10%29%2F60=16%2F60

90 custom cards in this case will mean 90 jobs.
Ann and Bob are to work together to do these 90 jobs.
Time unit will be MINUTES, and you can convert to hours later if you want ( and you will want to ).

Remember, I do not care about the fifteen minute break or start and stop time points in the day.

highlight%28%2816%2F60%29%2At=90%29.
Solve for highlight_green%28t%29.