Question

1. in three days dan read 78 pages, 75 pages, and 90 pages. what was the average number of pages dan read each day?

Explanation:

Step1: Calculate the total number of pages

Add the number of pages read each day: \(78 + 75+90\).

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Step2: Calculate the average number of pages per day

Divide the total number of pages by the number of days (\(n = 3\)). The formula for the average \(\bar{x}=\frac{\sum_{i = 1}^{n}x_{i}}{n}\), here \(\sum_{i=1}^{3}x_{i}=243\) and \(n = 3\). So \(\bar{x}=\frac{243}{3}=81\).

Answer:

\(81\) pages.