NandishSS wrote:Is the number of copies of a certain manuscript that n machines of type A can make in one hour greater than the number of copies of the manuscript that k machines of type B can make in one hour?
(1) n>k
(2) The number of copies of the manuscript that n machines of type A can make in one hour is 20
Statement combined:
Let n=2 and k=1, implying that there are 2 A machines and 1 B machine.
According to Statement 2, the number of copies produced in 1 hour by the 2 A machines = 20.
Case 1: Rate for each B machine = 1 copy per hour
Thus, the number of copies produced in 1 hour by the 1 B machine = 1.
In this case, the A machines produce more copies, with the result that the answer to the question stem is YES.
Case 2: Rate for each B machine = 100 copies per hour
Thus, the number of copies produced in 1 hour by the 1 B machine = 100.
In this case, the B machine produces more copies, with the result that the answer to the question stem is NO.
Since the answer is YES in Case 1 but NO in Case 2, INSUFFICIENT.
The correct answer is
E.
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