求助一道prep~~~~

rx_11

To celebrate a colleague's retirement, the T coworkers in an office agreed to share equally the cost of a catered lunch. If the lunch costs a total of X dollars and S of the coworkers fail to pay their share, which of the following represents the additional amount, in dollars, that each of the remaining coworkers would have to contri bute so that the cost of the lunch is completely paid?

A. X/T    B. X/(T-S)   C. SX/(T-S)   D. SX/T(T-S)  E. X(T-S)

我选的是A，答案是D
我觉得此题是不是问剩下那部分人应该付多少。。那不就是X/T吗？
所以可能我理解上有偏差···请求高人帮忙看一下~~····

rx_11

。。。

明白了··

毛毛carina

题目问的是剩下的人要比原来计划多付多少钱， which of the following represents the additional amount