Need with number 60 plz, multi-step math!

( 30 ) 16 hours and $160

divide monthly earnings by hourly rate for hours worked

hours worked = = 16 hours per month

her hourly rate increases from $8 to $10

earnings per month = 16 × $10 = $160

twenty-six miles over two gallons because the proportion for the original 13 miles to one gallon would be written 13/1 and, doing the same thing to the top and bottom, i multiplied by 2 and got 26/2