Additional Algo $5-19$ Implied Utilization

Cans are made in a process with two resources. The processing times for the resources are $400$ and $4\mathrm{.}2$ seconds. The first resource has $1$ worker and the second resource has $9$ workers. Demand occurs at the rate $2\mathrm{.}8$ cans per second.

What is the implied utilization $(\%)$ of the second resource?

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