GMAT Critical Reasoning (CR) | Re: Because of winter storm damage, the cost of a pound of apples at the l

increase in apple prices = 40%
increase in orange prices = 20%

If we assume the original prices of apple and orange to be "A" and "O", then the new prices are --

for apples = 1.4 A
for oranges = 1.2 O.

From this the author concludes that apples are more expensive than oranges--

Conclusion
1.4 A > 1.2 O

the biggest flaw in drawing this conclusion is that we DO NOT KNOW the actual values ofA andO .

What ifO is much more thanA ? then, I cannot say that1.4 A is greater