Hi,

I am not so sure if my solution is really correct, but however I did come up with right answer with this method.

Since we are dealing with percentages here I just assumed

Let Original CP= 100

Now since Profit=10%. Original SP=110

The question says if the CP is 10% Lower, so now

New CP=90

,Then New SP=1.3*90=117 (Since sold at a profit of 30%)

Now Difference between Original SP and New SP= 117-110= 7

In the question it says that this difference is $ 49 which is 7*7.

Now if I just do 7*Original SP= 7*110 =

770, which is the answer.

Please let me know if its a correct approach, or if I just got lucky. Thanks