Write a word problem that can be solved by ordering 3 decimals to thousands

3 runners run a 100 meter race, the time elapsed until they finish are

runner  time

A          10.124

B          10.121  

C          10.128

Who is faster?

To answer this question you have to order the three times. Start the comparison with the first one.

A's running time is greater than B's running time but lower than C's running time. Then, A goes in the middle of the ordered list.

Next continue with B. B's running time is the lowest time, so it goes first in the ordered list.

Finally, C's running time is the greatest time, so it goes last in the ordered list. The ordered list is:

runner  time

B           10.121  

A           10.124

C           10.128

the answer   is 200

step-by-step explanation:

this is a problem about poisson probabilities.   i don't know if you've

already studied poisson distributions, or if you have a place to look

to read more about the subject.  

here's how you can see a poisson distribution coming.   when there are

a lot of events that may happen at any time (or any place), and when

you're counting how many of them happen at a particular time (or a

particular place), and each event is independent of the others, then

the result is a poisson distribution.   this is roughly true for the

chocolate chips; one chip being in a cookie has only a small effect on

the probability that another chip will be in the cookie.

once you know you have a poisson distribution, you know a lot.   there

is only one parameter to a poisson distribution, so if you know the

mean, you know everything.   the form of the distribution is

  probability of n chips = {[e^(-x)]*(x^n)} / (n! )