Jane can make a handcrafted dream catcher in 6 days. zena makes the same dream catcher in 4 days. if they work together making dream catchers, how many days will it take to make 15 dream catchers?

36 days

Step-by-step explanation:

Hi, to answer this we have to calculate the production rate of each one, by dividing the number of catchers by the time spent.

Jane: 1/6 dream catcher per day

Zena: 1/4 dream Catcher per day

Adding both results:

1/6 +1/4 =5/12 dream catcher per day (both)

Finally we have to divide the 15 dream catchers needed by the rate (5/12 per day) to obtain the number of days that will take to make 15 dream catchers

x = 15 / (5/12) =36 days.

Feel free to ask for more if needed or if you did not understand something.

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! )