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City X has a population 4 times as great as the population of City Y,
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14 Jun 2016, 13:48
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City X has a population 4 times as great as the population of City Y, which has a population twice as great as the population of City Z. What is the ratio of the population of City X to the population of City Z? A) 1:8 B) 1:4 C) 2:1 D) 4:1 E) 8:1 OG 2017 New Question
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City X has a population 4 times as great as the population of City Y,
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Updated on: 15 May 2020, 05:42
AbdurRakib wrote: City X has a population 4 times as great as the population of City Y, which has a population twice as great as the population of City Z. What is the ratio of the population of City X to the population of City Z? A) 1:8 B) 1:4 C) 2:1 D) 4:1 E) 8:1 OG 2017 New Question A nice (fast) approach is to plug in some numbers that meet the given conditions. City Y has a population twice as great as the population of City ZLet's say the population of City Z is 1 person This means the population of City Y is 2 people City X has a population 4 times as great as the population of City Y If the population of City Y is 2 people, then the population of City X is 8 people So, the ratio of the population of City X to the population of City Z = 8 to 1Answer: E
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Re: City X has a population 4 times as great as the population of City Y,
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02 Jul 2016, 21:11
x= 4y, y= 2*z X : Y , Y : Z 4 : 1 , 2 : 1 8 : 2 , 2 : 1 So, X : Z = 8 : 1 (E)
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Re: City X has a population 4 times as great as the population of City Y,
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03 Oct 2016, 21:18
X=4Y , Y=2Z X=4(2Z)=8Z X/Z = 8 =>X:Z=8:1



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Re: City X has a population 4 times as great as the population of City Y,
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02 Dec 2016, 05:50
AbdurRakib wrote: City X has a population 4 times as great as the population of City Y, which has a population twice as great as the population of City Z. What is the ratio of the population of City X to the population of City Z?
A) 1:8 B) 1:4 C) 2:1 D) 4:1 E) 8:1 We are given that City X has a population 4 times as great as the population of City Y and that City Y has a population twice as great as the population of City Z. If we let the population of City X = x, the population of city Y = y, and the population of city Z = z, we can create the following equations: x = 4y AND y = 2z We need to determine the ratio of the population of City X to the population of City Z, or x/z. To determine the ratio, we can get both x and z in terms of y, so we have: x = 4y and z = y/2. We can substitute 4y for x and y/2 for z in the ratio x/z: (4y)/(y/2) = (4y)(2/y) = 8. Thus, the ratio is 8 : 1. Answer: E
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Re: City X has a population 4 times as great as the population of City Y,
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26 Feb 2017, 13:39
Make a table with xyz TEST IT strategy Z = 100 Y = 2Z = 200 X = 4Y = 800 X : Z = 800 : 100 8:1 E



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Re: City X has a population 4 times as great as the population of City Y,
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24 Mar 2018, 07:25
AbdurRakib wrote: City X has a population 4 times as great as the population of City Y, which has a population twice as great as the population of City Z. What is the ratio of the population of City X to the population of City Z? A) 1:8 B) 1:4 C) 2:1 D) 4:1 E) 8:1 OG 2017 New Question Short and simple, start working with Z Attachment:
POPULATION.PNG [ 929 Bytes  Viewed 14843 times ]
Thus, Answer must be (E) 8:1
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Re: City X has a population 4 times as great as the population of City Y,
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21 May 2020, 18:35
City X City Y. City Z
let's start from right to left : for example, let City z has 10 people
City Y has a population twice as great as the population of City Z
SO City Y has 10*2=20 people,
City X has a population 4 times as great as the population of City Y,
SO City X has 20*4= 80 people,
Q:What is the ratio of the population of City X to the population of City Z?
City X people. ___________ = 80/10 = 8/1 ( Ans E)
City Z people




Re: City X has a population 4 times as great as the population of City Y,
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21 May 2020, 18:35




