PP-T2-DS76

[emmaaqua]

Over a certain time period, did the number of shares of stock in Ruth's portfolio increase?

(1) Over the time period, the ratio of the number of shares of stock to the total number of shares of stocks and bonds in Ruth's portfolio increased.

(2) Over the time period, the total number of shares of stocks and bonds in Ruth's portfolio increased.

Ans:C

麻煩大家了~謝謝~

[amazingslim]

設number of shares of stock=s
number of shares of bonds=b
題目問s是否有增加?

(1)s/(s+b)比率增加
s增加或b減少都可造成此結果，insufficient

(2)(s+b)增加
s增加或b增加都可造成此結果，insufficient

combine(1)(2)
s增加

[emmaaqua]

懂了~感謝你喔~!!