$7.$ Production manager after extensive analysis identified a product he believes should be handled in a work cell. Operations that are necessary are listed below. The customer expects delivery of $250$ units per day and the workday is $420$ minutes.

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$$ What is the takt time?

$$ How many employees should be cross$-$trained for the cell?

$$ Which operations may warrant special consideration?

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Operation Time $($min$)$

Shear $1\mathrm{.}1$

Bend $1\mathrm{.}1$

Weld $1\mathrm{.}7$

Clean $3\mathrm{.}1$

Paint $1\mathrm{.}0$