Step: 1
Let, n be the actual size of the dinosaur's tail.
Step: 2
115 = 8n
[The dimensions of the actual dinosaur will be in proportion to the dimensions of the model.]
Step: 3
n × 1 = 8 × 15
[Write the cross products.]
Step: 4
Step: 5
So, the actual size of the dinosaur's tail is 120 ft.
Correct Answer is : 120 ft