Answer:
36 fries
Step-by-step explanation:
Michael has a probability of 0.3.
Lidia has a probability of 0.1.
Alexandra has the probability of 0.32.
Catherine has the probability of 0.1.
Let the probability of Ronald be x
Sum of all the probabilities must be 1
So,
So, probability of Ronald is 0.18
We are given that here are 200 fries in the basket.
So, the number of fries that Ronald will eat =
Hence Ronald will eat 36 fries.
Our goal here is to somehow "surgically remove" the repeating part of the number, so let's start by putting the original value in a variable and messing around with it a bit.
We'll let . We want to cut the
bit off completely, so let's create the scalpel that'll let us do that. If
, then we can also say that
. Maybe I was lying a bit: the
is our real scalpel here, and
is where we'll be making the cut. Mathematically, a "cut" is almost always shorthand for subtraction, so let's see what our operation (cutting
off of
) leaves us with:
The operation was a success! We can now simply divide either side by 9 to find , which, when reduced by dividing the numerator and denominator by 3, gives us