Development planners

bluementor wrote:Statement 1:

J = 60,000. However, we don't know the value of k. Insufficient.

Statement 2:

if J = 37,500, then H = 7500. We can calculate the value of k. However, we still lack the actual number of new jobs that were created. Insufficient.

Both statements together:

we know k from statement 2 and we know J from statement 1. Hence, we can use H=kJ to solve for H. Sufficient.

Choose C.



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A different way to think about this is to picture the relationship between H and J on the xy-plane. Let's say H is the y-axis and J is the x-axis. With this, you will see that H=kJ forms a straight line starting from the origin (if J=0, then H must equal 0, regardless of k) and that k is essentially the slope of this line.

In statement 1, with the value of J known, you cannot determine H unless you know the slope. In statement 2, you can construct the H=kJ line since you know a second point (37500, 7500). However, you don't know the actual number of jobs (J) that was created. From this you can conclude that both statements are required to answer the question.


-BM-