A worker has a base pay of $20 per hour, gets $4 more per hour after 8 hours, and gets $5 more per hour(from base pay) after 10 hours. How much would he make in a 15 hour day?

$333

Step-by-step explanation:

From the information given, the worker would get the base pay of $20 per hour, $4 more per hour after 8 hours  which would be $24 per hour and $5 more per hour from the base pay which would be $25 per hour after 10 hours. This means that the person would receive $20 per hour for 8 hours, $24 per hour after 8 hours until 10 hours and $25 per hour after 10 hours:

Total earnings=($20*8)+($24*2)+($25*5)

Total earnings=$160+$48+$125

Total earnings=$333

According to this, the worker would make $333 in a 15 hour day.