Operation management Question. Solve all each questions. please don't solve if you can't give the answers

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$.$Additional Algo $4-7$ Line Balancing

A process includes $9$ tasks and there are $3$ workers. Each task can be assigned to

only one worker and each worker must be assigned consecutive tasks. The time to

complete tasks $1$ to $9($in seconds$)$ are as follows:

$70,90,15,30,40,45,35,105,60$

What is the capacity of this process in units per hour?

Note: Round your answer to $1$ decimal place.