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23 Jan 2020, 01:49
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A certain store sells only black shoes and brown shoes. In a certain week, the store sold x black shoes and y brown shoes. If 2/3 of all shoes sold that week were black, which of the following expressions represents the value of y, in terms of x?
A. x/3
B. x/2
C. 2x/3
D. 3x/2
E. 2x
A. x/3
B. x/2
C. 2x/3
D. 3x/2
E. 2x
23 Jan 2020, 02:48
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Question:
A certain store sells only black shoes and brown shoes. In a certain week, the store sold x black shoes and y brown shoes. If 2/3 of all shoes sold that week were black, which of the following expressions represents the value of y, in terms of x?
Solution:
2/3 of all shoes sold were black
=> Out of a total of 3 shoes, 2 were black , and hence, 1 was brown
Since the store sold x black shoes and y brown shoes, we have:
x equivalent to 2 and y equivalent to 1
=> y = x/2
Answer B
A certain store sells only black shoes and brown shoes. In a certain week, the store sold x black shoes and y brown shoes. If 2/3 of all shoes sold that week were black, which of the following expressions represents the value of y, in terms of x?
Solution:
2/3 of all shoes sold were black
=> Out of a total of 3 shoes, 2 were black , and hence, 1 was brown
Since the store sold x black shoes and y brown shoes, we have:
x equivalent to 2 and y equivalent to 1
=> y = x/2
Answer B
Archit3110
Major Poster
23 Jan 2020, 07:48
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let total shoes x+y = 6
so black ; x ; 4 and y = 2
from given options ; plugin x =4 and we get y value at x/2
IMO B
so black ; x ; 4 and y = 2
from given options ; plugin x =4 and we get y value at x/2
IMO B
Bunuel
