Answer :
Final answer:
The weight of 15 full 16' rails and 2 8' rails can be calculated by multiplying their lengths by the weight per unit length of the rails. Assuming a weight per unit length of 25 lb/ft, the total weight of the normal rails is 6400 lb.
Explanation:
The weight of the rails can be calculated by multiplying the length of each rail by its weight per unit length. Assuming the weight per unit length of the rails is given in pounds per foot (lb/ft), we need to convert the lengths to feet.
For the 16' rails, we have 15 of them, so the total length is 16 * 15 = 240 feet. For the 8' rails, we have 2 of them, so the total length is 8 * 2 = 16 feet.
Let's assume the weight per unit length of the normal rails is 25 lb/ft. Now we can calculate the weight:
- Weight of the 16' rails: 240 feet * 25 lb/ft = 6000 lb
- Weight of the 8' rails: 16 feet * 25 lb/ft = 400 lb
Therefore, the total weight of the normal rails is 6000 lb + 400 lb = 6400 lb.
