20 yen

Gasoline will raise the price again in June. Gasoline was 120 yen one month ago. Gasoline will be 140 yen next month. The cause is depreciation of the yen. Because I bike every day, t embarrasses it very much. However, I think that it is safe one now. When oil in the world decreases gradually, it might become 1000 yen a liter. Our life will change suddenly if becoming it so.