Darrell works as an office clerk. If Darrell worked for 10 hours and earned $100, how much did he earn per hour?

To determine how much Darrell earned per hour, we need to divide his total earnings by the number of hours worked.

Earnings per hour = Total earnings / Number of hours worked
Earnings per hour = $100 / 10 hours

Simplifying the equation:
Earnings per hour = $10/hour

Therefore, Darrell earned $10 per hour.