Answer:
The correct answer is D. 115.
Explanation:
The weight on the bar can be calculated by adding up the weight of the plates on each side of the bar.
For this specific case, the weights on each side of the bar are:
- 1 plate of 45 lbs
- 1 plate of 10 lbs
- 1 plate of 2.5 lbs
To find the total weight on the bar, we need to calculate the weight on one side and then multiply it by 2 (since we have the same weight on both sides of the bar).
Weight on one side of the bar:
45 lbs + 10 lbs + 2.5 lbs = 57.5 lbs
Total weight on the bar:
57.5 lbs x 2 = 115 lbs
Therefore, the correct answer is D. 115.