$141\mathrm{.}5$ points

Slutzer supplies components for a specialized type of motherboard, with an estimated theoretical cycle time of $180$ seconds per part. The machinery used runs for a total of $8\mathrm{.}5$ hours. Within this timeframe, it manufactured $155$ parts, three of which were defective. Calculate the Overall Equipment Effectiveness.

$81\mathrm{.}07$

$89\mathrm{.}41$

$77\mathrm{.}21$

$63\mathrm{.}27$

$67\mathrm{.}23$