Answer:
The percent of increase = 23.53%
Step-by-step explanation:
Danny worked at a store 30 hours a week for $8.50 per hour
total Pay = 30 * $8.5 = $255
When the pay was increased to $9.00 and his hours were increased to 35 per week
The total pay after the increase = 35 * $9 = $315
The difference = $315 - $255 = $60
The percent of increase = = 23.53%