Beginning Algebra help!?

One conveyor belt can move 1000 boxes in 11 minutes. Another can move 1000 boxes in 8 minutes. If the two belts work together how long would it take to complete the job?

I know the answer is 4 12/19 Hrs.

Question

Beginning Algebra help!?

One conveyor belt can move 1000 boxes in 11 minutes. Another can move 1000 boxes in 8 minutes. If the two belts work together how long would it take to complete the job?

I know the answer is 4 12/19 Hrs.

hoblos · Answer

which job?!!  moving 1000 boxes

anonymous · Answer

Its saying 1 conveyor belt can complete its job by moving 1000 boxes in 11 mins. The other conveyor belt can complete its job by moving 1000 boxes in 8 mins. How long would it take to complete the job if they were combined?

anonymous · Answer

|dw:1334017569777:dw|