Carcass wrote:

A certain form letter is to be sent to prospective customers. If 4 model-X computers working independently can do a combined total of 4 of the letters in 4 minutes, then 100 model-X computers working independently can do a combined total of 100 of the letters in exactly how many minutes?

(A) 4 min

(B) 10 min

(C) 25 min

(D) 40 min

(E) 100 min

Kudos for the right answer and explanation

Using the relation between Work(W) Men (M) and Time(T)

To put this into a formula

[W1][/W2]= [M1 * T1][/M2 * T2]

[4][/100] = [4 * 4][/100 * T2]

T2 = 4 Mins

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