Question 9

Explanation

To find the second highest number of visitors, we need to sum the total visitors of the library and laboratory for each day:

• Monday: $150 + 250 = 400$ people.
• Tuesday: $135 + 210 = 345$ people.
• Wednesday: $100 + 140 = 240$ people.
• Thursday: $140 + 170 = 310$ people.
• Friday: $165 + 120 = 285$ people.

Now let's rank the number of visitors from highest to lowest:

1. Monday ($400$)
2. Tuesday ($345$)
3. Thursday ($310$)
4. Friday ($285$)
5. Wednesday ($240$)

Therefore, the second highest number of visitors in the two facilities of SMA MMM occurred on Tuesday.