Suppose implied utilization at a machine is $1\mathrm{.}9.$ If total demand at the machine is $4$ units per minute, what is the capacity of the machine in units per hour?

Suppose implied utilization at a machine is $1\mathrm{.}9.$ If total demand at the machine is $4$ units per minute, what is the capacity of the machine in units per hour?

$7\mathrm{.}6$

$240$

$126\mathrm{.}3$

$456$