Zandywill Zandywill

21-04-2017
Mathematics

contestada

Andrea's change purse contains 8 quarters 9 dimes and 8 nickels. If she shows two coins randomly without replacing them in her purse what is the probability she chose two dimes?
A) 2/5
B) 3/25
C) 27/200
D) 72/625

Respuesta :

CarlosGP CarlosGP

21-04-2017

there are 9 dimes in a total of 8+9+8=25 coins

The probability to choose one first is 9/25

Now there are 8 dimes in 24 coins and the probability to get a second dime is 8/24=1/3

The solution will be: (9/25)x(1/3)=3/25 then the answer is "B"

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