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A.
(1) as the rate of increment is constant. we can calculate rate when we know amounts at any two years.
Once rate in known we can calculate amount in 1991 using compound interest formula.

statement I gives us the profit in 1985 ($212,000) and in 1989 ($242,000). Since the amount of profit is constant, we know that a yearly profit increase of 7500. 1991 it will be $257,000. sufficient

statement II doesn't give us the profit for 1985, so we dont know what it increases to in 1991. We only know that the profit amount is greater by $45,000 in 1991.

If you're not careful, you can make an easy mistake of thinking statements 1 & 2 are equivalents. Statement 1 gives an original amount and annual profit increase (and hence you can calculate the 91 amount) whereas statement 2 only gives the annual profit increase (with no amount).

Man, I have to be careful when rushing through these problems on the test!

Well, I’ve had a busy month! In February I traveled to interview and visit three MBA programs. Earlier in the month I also went to Florida on vacation. This...

One of the reasons why I even considered Tepper is the location. Last summer I stopped in Pittsburgh on the way home from a road trip. We were vacationing...