Solution:Concept: First, let's assume that the number of deer in the flock is Then divide the number of deer in the herd by to find half of the herd grazing in the field. Then find the remaining herd by subtracting half of the herd from the number of deer and taking . Play the other half th and get the acquisition value equal to 9 to find the value you need.
Let the total no of deer be So, we have
Thus, deer in the herd.
Hence, the answer is option 1.