Did it in a slightly lenghty way, posting it here to showcase one more method in case.
Took LCM of 9, 5 and 11=495
Let 495 be the total number of sheeps
9x=495
x=55
Male Sheeps= 55*4
Female Sheeps=55*5
Dividing 495 by 3, we have 165 sheeps in each pen
First pen is 4:11, 15y=165, y=11
Male in first pen=44
Female in first pen is 121
Balance male sheeps=(55*4)-44=176
Balance Female sheeps= (55*5)-121=154
Since the sheeps are equal in both of remaining pens, male sheeps will be 176/2=88 and female sheeps will be 154/2=77
Ratio=88/77 or 8/7
anceer
A certain farm has a group of sheep, some of which are rams (males) and the rest ewes (females). The ratio of rams to ewes on the farm is 4 to 5. The sheep are divided into three pens, each of which contains the same number of sheep. If the ratio of rams to ewes in the first pen is 4 to 11, and if the ratio of rams to ewes in the second pen is the same as that of rams to ewes in the third, which of the following is the ratio of rams to ewes in the third pen?
A. 8/7
B. 2/3
C. 1⁄2
D. 3/12
E. 1/6