Question

Suppose Jennifer was a kid in the 1920s who listened to the radio for 45 minutes one week. If the ratio of time hearing stories to time hearing advertisements was 4:1, how much of the time did she spend listening to ads that week?

Option 1: 34 minutes
Option 2: 36 minutes
Option 3: 9 minutes
Option 4: 11 minutes

Answer 1

Jennifer spent 9 minutes listening to ads, calculated by dividing the total listening time by the sum of the ratio parts, with ads corresponding to 1 part of the 4:1 story to ad ratio.

Step-by-step explanation:

Let's find out how much time Jennifer spent listening to ads. We know that Jennifer listened to the radio for a total of 45 minutes. The ratio of time spent listening to stories vs. ads is 4:1, which means for every 4 minutes of story, there was 1 minute of ad. To find the total time spent on stories and ads, we divide the total time by the sum of the ratio parts, which is 4 + 1 = 5. Then, 45 minutes ÷ 5 = 9 minutes per part.

Given that ads correspond to 1 part, Jennifer listened to 9 minutes of ads in that week.