Question

2 Average consumption per mile. 3 Using the average consumption express maximum consumption as a percentage of the average correct to two decimal places. If the total petrol consump- tion of car on 4 different joumeys each of 200 miles are found to be as 6.65, 7.5, 6.85,7.05 gallons respectively.​

Answer 1

Answer:

Car averages x miles per gallon, means that 1 gallon is enough to drive x miles.

We are asked to find average miles per gallon (miles/gallon) --> average miles per gallon would be total miles driven divided by total gallons used (miles/gallon).

Total miles driven is 10+50=60.

As car averages 25 miles per gallon in the city for 10 miles in the city it will use 10/25=0.4 gallons;

As car averages 40 miles per gallon on the highway for 50 miles on the highway it will use 50/40=1.25 gallons;

So average miles per gallon equals to 

Answer: D.