two digit positive integer in OG 11- 228

If a two-digit positive integer has its digits reversed, the resulting integer differs from the original by 27. By how much do the two digits differ?
A. 3
B. 4
C. 5
D. 6
E. 7

Please help. Thanks very much

hard assumption question

A recent article stated that only 5.5% of American colleges grant the majority of their degrees in the liberal arts. Citing this, a reader wrote to lament that this was further evidence of the decline of academic rigor in American post high school education. Which of the following is an assumption o...

scoops of ice cream - DS 55 from OG 11

At a certain picnic, each of the guests was served either a single scoops or a double scoop of ice cream. How many of the guests were served a double scoop of ice cream? 1. at the picnic, 60% of the guests were served a double scoop of ice cream. 2. a total of 120 scoops of ice cream were served to ...

OG verbal - CR - Q14

the sustained massive use of pesticides in farming has two effects that are especially pernicious. First, it often kills the pest's natural enemies in the area. Second, it often unintentionally gives rise to insecticide-resistant pests, since those insects that survive a particular insecticide will ...

DS 41 from OG quantative

if S is a set of four numbers w, x, y and z, is the range of the numbers in S greater than 2? 1. w - z> 2 2. z is the least number in S. OA is A. its explanation is: 1. the difference between two of the numbers in the set is greater than 2, which means that the range of the four numbers must also be...

Thank you all.
OA is A.
PS 33 from OG 11th.
I have no idea about lowest positive integer. Could you pls explain more?

CR from OG 11th

a company's two divisions performed with remarkable consistency over the past three years: in each of those years, the pharmaceuticals division has accounted for roughly 20% of dollar sales and 40% of profits, and the chemicals division for the balance. Regarding the past three years, which of the f...