Question

josephine noticed that out of 10 e - mails she received, 7 were advertisements. what can she predict about the number of advertisements she will receive in the next 100 e - mails?
○ she will receive 7 advertisements.
○ she will receive 10 advertisements.
○ she will receive 70 advertisements.
○ she will receive 90 advertisements.

Explanation:

Step1: Find the proportion of ads

The proportion of advertisement emails in 10 emails is $\frac{7}{10}$.

Step2: Predict for 100 emails

To find the number of ads in 100 emails, multiply the proportion by 100: $\frac{7}{10} \times 100 = 70$.

Answer:

She will receive 70 advertisements. (Corresponding option: She will receive 70 advertisements.)