She earns $18.80 for the first 40 hours.
She earns 1.5 times that amount after 40 hours.
$18.80 x 1.5 = $28.20 (the amount she earns after 40 hours per hour)
So she worked 45.5 hours.
40 hours of the total time earned her 18.80 per hour
5.5 hours of the total time earned her 28.80 per hour
(40x18.80) + (5.5x28.80) = $910.40
She earned $910.40 for 45.5 hours of work.
