Answer:
Hence the number in decimal is:
0.125
Explanation:
We are given that:
The top 1/8 of the runners advance to the finals for the track and field competition.
We are asked to find the decimal value of the number i.e. we have to represent 1/8 in the decimal value.
on dividing the number 1 ( which is in numerator) by 8 ( which is in denominator) we obtain:

Hence the number in decimal is:
0.125