Hope this answers your question.
This is a Branching question.
45u – 35u = 30
10u = 30
1u = 30÷ 10 = 3
120u = 120 × 3 = 360 animals (amended)
The total number of units 3u + 5u must be 8 units, not 7, I think.
Can u please check and confirm.
Thank you for spoting the mistake.
I have amended it.