Noah scores 20 points in a game. Mai's score is 30 points. The mean score for Noah, Mai, and Clare is 40 points. What is Clare's score? Explain or show your reasoning.

An earthworm farmer examined two containers of a certain species of earthworms so that he could learn about their lengths. He measured 25 earthworms in each container and recorded their lengths in millimeters.

Here are histograms of the lengths for each container.

Histogram A, length in millimeters, from 10 to 80 by fives. Beginning at 10 up to but not including 15, height of bar at each interval is 1, 0, 2, 0, 2, 7, 4, 2, 0, 1, 4, 1, 0, 1.

Histogram B, length in millimeters, from 5 to 65 by fives.  Beginning at 5 up to but not including 10, height of bar at each interval is 3, 10, 3, 1, 3, 1, 0, 0, 1, 1, 1, 1.

1. Which container tends to have longer worms than the other container?
2. For which container would 15 millimeters be a reasonable description of a typical length of the worms in the container?
3. If length is related to age, which container had the most young worms?

Compare the numbers using >, <, or =.