Question
During a bike challenge, riders have to collect various colored ribbons. Each 1/2 mile they collect a red ribbon, each 1/8 mile they collect a green ribbon, and each 1/4 mile they collect a blue ribbon. Which colors of ribbons will be collected at the 3/4 mile marker?
Answer:
A green and a blue ribbon will be collected at the
mile marker.
Step-by-step explanation:
<em>Topic: Factors and Multiples</em>
<em></em>
To solve this, we'll write out the first few multiples of the distances where the collection of ribbons occurs:
Given that each
mile they collect a red ribbon; The multiples for the Red Ribbon are as follows (by adding
at each progression):
Red: ![\frac{1}{2} -> {1}{} -> \frac{3}{2} -> {2}{} -> \frac{5}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D%20%20-%3E%20%7B1%7D%7B%7D%20%20-%3E%20%5Cfrac%7B3%7D%7B2%7D%20%20-%3E%20%7B2%7D%7B%7D%20%20-%3E%20%5Cfrac%7B5%7D%7B2%7D)
Given that each
mile they collect a green ribbon; The multiples for the Green Ribbon are as follows (by adding
at each progression):
Green: ![\frac{1}{8} -> \frac{1}{4} -> \frac{3}{8} -> \frac{1}{2} -> \frac{5}{8} -> \frac{3}{4} -> \frac{7}{8} -> {1}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B8%7D%20%20-%3E%20%5Cfrac%7B1%7D%7B4%7D%20%20-%3E%20%5Cfrac%7B3%7D%7B8%7D%20%20-%3E%20%5Cfrac%7B1%7D%7B2%7D%20%20-%3E%20%5Cfrac%7B5%7D%7B8%7D%20-%3E%20%5Cfrac%7B3%7D%7B4%7D%20%20-%3E%20%5Cfrac%7B7%7D%7B8%7D%20%20-%3E%20%7B1%7D)
Given that each
mile they collect a blue ribbon; The multiples for the Blue Ribbon are as follows (by adding
at each progression):
Blue: ![\frac{1}{4} -> \frac{1}{2} -> \frac{3}{4} -> {1}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B4%7D%20-%3E%20%5Cfrac%7B1%7D%7B2%7D%20%20-%3E%20%5Cfrac%7B3%7D%7B4%7D%20%20-%3E%20%7B1%7D)
Since ,
is a multiple of both
, then a green and a blue ribbon will be collected at the
mile marker.