Using the principle of common difference , we can observe that the <em>distance moved per roll</em> increases by a constant amount of centimeters . Hence, the distance moved in the 5th roll is 180 cm
Setting up a proportional relationship :
- <em>Second = S </em>
- <em>Distance = d </em>
<u>The common </u><u>difference</u><u> between each roll can be obtained thus :</u>
d2 - d1 = d3 - d2 = d4 - d3
60 - 20 = 100 - 60 = 140 - 100
40 = 40 = 40
Hence, the common difference = 40
<u>The distance obtained on the fifth roll</u> :
d(5) = d(4) + common difference
d(5) = 140 + 40
d(5) = 180
Therefore, the distance obtained on the fifth roll is 180 cm
Learn more :brainly.com/question/18796573