Answer:
The correct answer is A -6/17
Given:
Ratio of tulips to roses = 2:1
Total number of flowers = 18
To find:
The number of tulips.
Solution:
Let the number of tulips and roses are 2x and x respectively.
According to the question,


Divide both sides by 3.


Now,
Number of tulips 

Therefore, the number of tulips is 12.
N+n+1+n+2+n+3+n+4=265
5n+10=265
5n=255
n=51
So the integers are:
51,52,53,54, and 55