Answer:
Step-by-step explanation:
Given
Call out fee = £35
Per hour = £30
Time = 2 hours
Per light switch = 12 minutes
Required
Cost of wiring a house with 10 light switches
First, the minutes on the 10 light switches should be calculated'
If time per light switch is 12 minutes;
then
Time for 10 = 12 minutes * 10
Time for 10 = 120 minutes
[Convert to hours]
Time for 10 = 2 hours
Next is to calculate the total time spent altogether
Time = 2 hours + Time spent on 10 light switches
Time = 2 hours + Additional 2 hours
Time = 4 hours
Total Charges = Call out fee + Charges per hour * Time
Total Charges = £35 + £30 * 4
Total Charges = £35 + £120
Total Charges = £155
