Question

BRAINIEST ANSWER

Answer 1

Hour of private use: 4 hours
hour for research work: 2 hours
hour for commercial work: 1 hour
hour for test purposes: 1 hour.

A total of 8 hours a day where only 7 hours generate income.

private use: 4 hours * 5 per hour = 20
research work: 2 hours * 15 per hour = 30
commercial work: 1 hour * 40 per hour = 40

20 + 30 + 40 = 90 for 7 hours in one day.

Percentage of commercial work on total receipts for the day.

40 ÷ 90 = 0.4444 x 100% = 44.44%  CHOICE A. 44.50