based it on a four-week month and 40-hour work week which amount it's closest to the combined hourly wage needed for this family to pay its budgeted expenses

First, we have to find the total of work hours per month, which is 4 multiplied by 40 , the result is 160 hours per month. Then divide the budgeted expenses by the total of hours, $4430 ÷ 160 hours = $27,7 / hour .
The answer is $27,7 per hour.