Hey, this really isn’t and answer and no offense but all you have to do is think of how many friends you would want there for ex:5 friends. Then you subtract :)
The answer is that it’s unlikely
d=rt
r = 9 1/2 as an improper fraction (2*9 +1)/2 = 19/2
t = 1 3/4 as an improper fraction (4*1+3)/4 =7/4
d=rt
d = 19/2* 7/4 = 133/8
8 goes into 133 16 times with 5 left over
16 5/8 miles
1/2 = 36/72
3/4 = 12/16
5/6 = 25/30
Hi,
The first thing you have to remember, that the sum of all probabilities are equal to 1.
As you have only 4 items : Pasta + Fish + Pizza +Salad
So pasta + fish + pizza +salad = 1
1 means every client who bought something had something to eat.
So now it simple :
We know the probability of every other items, so we will find the probabilty of salad by substracting off 1 every other probabilities.
<u>Remind yourself to always have data in same shape/ units etc.</u>
Here we have percentage, fraction, numbers.... can be confusing.
So convert all in same shape. I 'm going to convert all in numbers, as it seems to me the simpliest.
I will call probability of salad "X" as it usually like that we call something unknown in math.
So pasta = 15 % = 15/100 = 0.15
fish = 0.2
pizza = 3/10 = 0.3
salad = X
So now we have :
pasta + fish + pizza +salad = 1
replace by what I know :
0.15 +0.2+0.3 + X = 1
0.65 + X = 1
0.65 +X -0.65 = 1 - 0.65
X = 0.35
Salad probability is 0.35 , which means 35 % .