After the embargo was lifted, the price of gasoline fell by 10%. Days later, when the
cease-fire was announced, the price fell again
(from the new lower price) by another 20%. If
the price of gasoline is now $1.08, what was it
originally?

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?