Ｍａｔｈ問題

1. A cetain theater has 100 balcony seats. For every $2 increase in the price of a balcony seat above $10 the price of a balcony seat above $10, 5 fewer seats will be sold. If all the balcony seats are sold when the price of each seat is $10, which of the following could be the price of a balcony seat if the revenue from the sale of balcony seats is $1,36 from the sale of balcony seats is $1,360 ?
(A)$12 (B)$14 (C)$16 (D)$17 (E)$18
正解はＣですが、問題の意味がどうしても理解できず、手が出ません。

2. On a scale that measures the intensity of a certain phenomenon, a reading of n + 1 corresponds to an intensity that is 10 times the intensity corresponding to a readin of n. On that scale, the intensity corresponding to a reading of scale, the intensity corresponding to a reading of 8 is how many times as great as the intensity corresponding to a reading of 3 ?
(A)5 (B)50 (C)10の5乗　(D)5の10乗　(E)8の10乗 - 3の10乗
正解はＣですが、この問題も意味が理解できません。

どなたかご教示頂ければ幸甚です。
かっちゃん