Develop an estimate for each of the following situations:. a. The cost of a 500-mile automobile trip, if gasoline is $3 per gallon, vehicle wear and tear is $0.50 per mile and our vehicle gets 20 miles per gallon. b. The total number of hours in the average human life, if the average life is 75 years.

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  

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