155x33=5,115
5,115 pounds for 33 foot long railroad.
Please consider the attached graph.
We have been given that there are two different models of the same triangular-shaped garden. The height of the model on the left is 14 cm. We are asked to find the height of the model.
First of all, we will convert 14 cm into feet.
We can see that model on left side has a scale of 1 cm is equal to 15 feet.
14 cm = 14×15 feet = 210 feet.
We can see that model on the right side has a scale of 1 cm is equal to 7.5 feet.
Since both models represent same triangular-shaped garden, so the actual height for the both models will be same.
Now we need to convert actual height of 210 feet into inches using 2nd scale.

Therefore, the height of the model on right is 28 inches.
If you drive for 3 hours at 60 mph you will have gone 180 miles.
If you drive for 2 hours at 70 mph you will have gone 140 miles.
If we add 180 + 140 = 320.
So you traveled 320 miles. 320 is the answer.