12 at a walkathon, each participant completed either a 3-km route, a 5-km route or an 8-km route. - of the participants completed the 3-km route, as of the 20 participants completed the 5-km route and the rest completed the 8-km route. for every 1 km a participant walked, $4 was donated to charity. a total of $8208 was donated to charity. (a) what is the ratio of the number of participants who completed the 3-km route to the number who completed the 5-km route to the number who completed the 8-km route? (b) what is the total number of participants at the walkathon? complete

a) 5:9:6, b) 380

Step-by-step explanation:

Let the number of participant be 'x'.

Let the number of participant of 3-km route be

Let the number of participants of 5-km route be

Let the number of participants of 8-km route be

According to question, we get that

Therefore, the number of participants is 380.

Number of participants of 3 km route

Number of participants of 5 km route  

Number of participants of 8 km route  

Ratio of the number of participants completed 3 km to 5 km to 8 km is given by

95:171:114

=5:9:6

Hence, a) 5:9:6, b) 380

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0