SOLUTION: John filled the gas tank of his car with 32.4 litres of gas just before starting on a trip. He noticed that the odometer read 30803 km as he left the gs station. When he stopped fo

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Question 1188393: John filled the gas tank of his car with 32.4 litres of gas just before starting on a trip. He noticed that the odometer read 30803 km as he left the gs station. When he stopped for lunch, he saw the next palindrome on his odometer. He then filled up with 42 litres of gas at the palindrome after the one he saw at lunch. What was the averages number of litres per 100 km used by his car during the trip?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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John filled the gas tank of his car with 32.4 litres of gas just before starting on a trip.
He noticed that the odometer read 30803 km as he left the gas station.
When he stopped for lunch, he saw the next palindrome on his odometer.
that would be 30903
:
He then filled up with 42 litres of gas at the palindrome after the one he saw
at lunch.
that would be 31013
:
find the total dist since fillup; 31013 - 30803 = 210 km
:
What was the averages number of litres per 100 km used by his car during the trip?
42/2.1 = 20 liters per 100 km