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4vir4ik [10]
3 years ago
5

At a party there are 30 students over age 21 and 20 students under age 21. You choose at random 3 of those over 21 and separatel

y choose at random 2 of those under 21 to interview about attitudes toward alcohol. You have given every student at the party the same chance to be interviewed: what is that chance
Mathematics
1 answer:
Sergio039 [100]3 years ago
3 0

Answer:

10%

Step-by-step explanation:

According to the scenario, given data are as follows:

Students over age 21 = 30

Students under age 21 = 20

Choose student over age 21 = 3

Choose student under age 21 = 2

So, we can calculate chances by using following method,

Chances of student over age 21 = Number of choose student ÷ Total students

= 3 ÷ 30  = 0.10 = 10%

Similarly, Chances of student under age 21 = Number of choose student ÷ Total students

= 2 ÷ 20  = 0.10 = 10%

Hence, in both condition, chances are 10%.

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scoray [572]

I think you mean 2/5 and not 25 for Monday and 1/3 and not 13 on Tuesday. So i will solve with the fraction.

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Step-by-step explanation:

Step 1

The fraction of windows washed on Monday = 2/5

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Step 255

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5 0
3 years ago
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3 years ago
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