B as 25.50 pls lmk if it helped
Since there is no ties:
The 1st place could be obtained in 8 ways (each one could be first)
Now that the 1st place is occupied, the remaining pretenders to te 2nd place are 7 people
We have a bounce up and down
but, it is dropped from a height so the initial one doesn't count
we do
2(sum of all)-initial
infinite sum

a1=1
r=0.9

sum=1/0.1
sum=10
so
2(sum)-initial=2(10)-1=20-1=19
travels 19m
5.6 to 4,7 according to 818394 you should be nearing 83832
1.44/ 12 equals .12 . Think of it as a regular division problem first, then deal with the decimal.