Question

an electrician charges $50 per hour and spends $15 a day on gasoline. if she netted $1315 in 4 days, how many hours did she work?

41 hours
32.5 hours
27.5 hours
37.6 hours

Explanation:

Step1: Calculate total gasoline cost

Cost for 4 days is $15\times4 = 60$ dollars.

Step2: Calculate total earnings before gasoline cost

Let total earnings before gasoline cost be $x$. We know net - earnings is $1315$ and gasoline cost is $60$. So $x=1315 + 60=1375$ dollars.

Step3: Calculate number of hours worked

Since she charges $50$ per hour, and total earnings before gasoline cost is $1375$ dollars. Let number of hours be $h$. Then $h=\frac{1375}{50}=27.5$ hours.

Answer:

27.5 hours