Whirly Corporation$$s contribution format income statement for the most recent month is shown below:

Total Per Unit

Sales $(7,400$ units$)$ $ $229,400$ $ $31\mathrm{.}00$

Variable expenses $140,60019\mathrm{.}00$

Contribution margin $88,800$ $ $12\mathrm{.}00$

Fixed expenses $55,300$

Net operating income $ $33,500$

Required:

$($Consider each case independently$)$:

$1.$ What would be the revised net operating income per month if the sales volume increases by $70$ units?

$2.$ What would be the revised net operating income per month if the sales volume decreases by $70$ units?

$3.$ What would be the revised net operating income per month if the sales volume is $6,400$ units?

$1.$ Revised net operating income $\_\_\_\_\_\_$

$2.$ Revised net operating income $\_\_\_\_\_\_$

$3.$ Revised net operating income $\_\_\_\_\_\_$