Question

when wiring a house,a electric knows that time she will take is given by the formula.time=2 hours+12 minutes per lightswich she charges her custemers cal out fee of £35, plus 30 per hour.how much should a custemer be charged for wiring a house with 10 lightswiches

Answer 1

£155 for wiring a house with 10 light explanations

Explanation:

To calculate the total time required to wire a house with 10 light switches, we'll use the given formula: time = 2 hours + 12 minutes per light switch.

First, we need to determine the time required for the light switches. Since the formula states that it takes 12 minutes per light switch, we can calculate it as follows:

Time for light switches = 12 minutes per light switch * 10 light switches

= 120 minutes

Next, we'll convert the minutes to hours by dividing by 60:

Time for light switches = 120 minutes / 60

= 2 hours

Now we can calculate the total time:

Total time = 2 hours (light switches) + 2 hours (base time)

= 4 hours

The electrician charges a call-out fee of $35 and $30 per hour. Since the total time is 4 hours, the customer should be charged for 4 hours of work.

Total cost = Call-out fee + (Hourly rate * Total time)

= $35 + ($30 * 4)

= $35 + $120

= $155

Therefore, the customer should be charged $155 for wiring a house with 10 light switches.