###Human: Irene earns $500 if she works for 40 hours a week and gets an extra $20 for every hour of overtime. If she worked 50 hours last week, calculate her total income., ### Assistant: If Irene worked 50 hours last week, the total number of hours counting as overtime is 50-40 = 10 hours.
Since she's given $20 for every hour of overtime, she earned 10*$20 = $200 in overtime.
Her total income, including the overtime, is $500+$200= $700 
 So the answer is :  700