What is the total weight of Lucy Lightfoot if she stands on two scales, each reading 325N?

When Lucy Lightfoot stands on two separate scales, each scale measures the force exerted by her weight on that particular scale. Since both scales are displaying a reading of 325 N, to determine her total weight, you simply add the readings from both scales together.

In this scenario, the reading from the first scale is 325 N and the reading from the second scale is also 325 N. When you sum these two values, you get:

325 N + 325 N = 650 N

This total represents the combined force of gravity acting on Lucy, which is her weight. Therefore, the total weight of Lucy Lightfoot is 650 N, confirming that the correct answer is indeed 650 N.