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 contribute so that the cost of the lunch is completely paid?
I went with substitution method...
I replaced variables with values for easy calculations
Actual each person share 200/10 = 20
But 2 members didnt pay , so 8 members (T-S) would have paid the balance...
25-20 = 5 Only choice D gives value same value..
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