Customer leaves 5dollar tip which was 18% of the coast of meal .. how much was the original bill

Mathematics

1 answer:

Digiron [165]3 years ago

7 0

I think it might be $90.

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gladu [14]

Answer:

The answer(s) would be WY/WZ, or WYZ (If this is multiple choice)

Step-by-step explanation:

The reasoning is that in the "IRL Equation" the polls showed that orange juice was prefered over milk, and didn't matter whether they wanted a bagel or muffin. All that matters in this equation is that it is one sided (For the 1st poll that is) and now you are able to narrow down the possibilities of the answer(s).

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8_murik_8 [283]

Let
b---> the original amount of blue balls in the bag
p---> the original amount of pink balls in the bag

we know that
b=8+p
p=5
so
b=8+5----> b=13

step 1
Find the total of balls originally in the bag
total =13+5-----> 18

step 2
find the probability that a person will pick a blue ball first
Find P(b)
P (b)=13/18

step 3
Find the probability that a person will pick a pink ball second without replacement
the total of balls now is (18-1)-------> 17
P(p)=5/17

step 4
Find the probability that a person will pick a blue ball first and then a pink ball without replacement
(13/18)*(5/17)-----> (13*5)/(18*17)------> 65/306-----> 0.21

the answer is
0.21

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