While driving your rental car on your trip to Europe, you find that you are getting 12.4 kilometers per liter of gasoline. What does this correspond to in miles per gallon? PLEASE HELP ME!!!!

Question

anonymous · Answer

$$12.4\times0.6214$$
$$7.705$$

anonymous · Answer

where did you get the 0.6214 from?

jkristia · Answer

how many km / mile ?  (1.6km / mile)
how many liter / gallon ? (3.8liter / gallon)

anonymous · Answer

i'm confused

jkristia · Answer

so, 12.4km / l 
-> 12.4 / 1.6 = 7.75 miles / liter
-> 7.75 * 3.8 = 29.45 miles / gallon

anonymous · Answer

why did you divide 12.4 by 1.6 and multiple the result by 3.8?

jkristia · Answer

first I change from km to miles, hence divide by 1.6 (1.6 km to one mile)
now I have miles per liter, so I change the liter to gallons by multiplying by 3.8 (3.8liter to a gallon)

anonymous · Answer

shouldn't it be 7.70 instead of 7.75? because there's a way in my book they showed me to convert unit |dw:1368919666600:dw|