prep182题 读不懂呀 求NN解答

lovejulie_0

stock        number of shares

V                          68

W                         112

X                         56

Y                        94

Z                        45

The table shows thenumber of shares of each of the 5 stocks owned by Mr. Sami.  If Mr. Sami was to sell 20 shares of Stock Xand buy 24 shares of Stock Y, what would be the increase in the range of thenumbers of shares of the 5 stocks owned by Mr. Sami?

(A) 4
(B) 6
(C) 9
(D) 15
(E) 20

Nickyl86

题目没看懂么？就说目前的range是a1=112-45，那么他卖出X和买入Y之后，range会发生变化，假设a2，问你a2-a1=?

应该会了吧

lovejulie_0

明白了。。。谢谢大侠！

Nothuman

同问，同谢