Answer:
A.$325
B.657000 hours
Explanation:
We can calculate the cost of a 500-mile automobile trip by adding the cost of gasoline burnt and the cost of wear and tear during the trip. Total number of hours of 75 years old can be calculated by multiplying the number of hours in a day with the total number of days in a year.
DATA
Gasoline per gallon = $3
Vehicle wear and tear = $0.50/mile
Miles per gallon = 20 miles
Hours in a day = 24hours
Days in a year = 365
Number of years = 75
Requirement A
Cost of a 500 mile automobile trip = Cost of gasoline + Cost of vehicle wear ]
Cost of a 500 mile automobile trip = $75 + $250 = $325
Working
Cost of gasoline = (500 miles / 20 miles) * $3 per gallon = $75 Cost of vehicle wear and tear = 500 miles * $0.50 per mile = $250
Requirement A
Total number of hours in 75 years of human life = Life in years x Number of days in a year x Number of hours in a day
Total number of hours in 75 years of human life = 75 years * 365 days * 24 hours = 657000 hours