Hi DeidreFauscett965,
To solve this problem first you have to figure out how much the employee earned during the first 40 hours. You do this by multiplying $11.25 by 40.
To multiply decimals you multiply regularly, ignoring the decimal points.
11.25 x 40 = 45000
Then, add the decimal points by looking at how many decimal points your original numbers had combined, which was two from 11.25, so:
11.25 x 40 = 450.00
So the employee earned $450 during the first 40 hours. Now, you have to subtract $450 from $622 to see how much they earned in overtime.
622-450 = $172 earned in overtime
To figure out how many hours they worked in overtime you have to divide $172 by $16 because that is what they were paid for each overtime hour.
172 / 16 = 10.75 (image attached)
So the employee worked 10.75 overtime hours.