arrays in vb.net

[anil.kut]

i have a array known as age(20). i then ask for age for 20 children . as
for i as integer = 0 to 19
console.writeline("please enter your name ")
age(i) = console.readline.
i then determine the fastest runner in a programme . there are 3 age categories . for 4 to 6 , 7 to 10 and 11 to 14.
i have to output the name of the fastest child in all three categories . what i dont understand is how i determine the position of the child in the array age(19) for the fastest runner

[Kyle123]

How are the times stored? Is this homework?