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16 Mar 2022, 05:15
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
77% (02:57) correct
23%
(03:09)
wrong
based on 526
sessions
History
Date
Time
Result
Not Attempted Yet
Solution X contains only ingredients a and b in a ratio of 2:3. Solution Y contains only ingredients a and b in a ratio of 1:2. If Solution Z is created by mixing solutions X and Y in a ratio of 3:11 , then 630 ounces of Solution Z contains how many ounces of a ?
(A) 68
(B) 73
(C) 89
(D) 219
(E) 236
Are You Up For the Challenge: 700 Level Questions
(A) 68
(B) 73
(C) 89
(D) 219
(E) 236
Are You Up For the Challenge: 700 Level Questions
17 Mar 2022, 04:37
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x: a:b is in the ratio of \(2:3\), which means that the mixture is \(40\)% a and \(60\)% b.
y: a:b is in the ratio of \(1:2\), which means that a makes up \(\frac{1}{3}\) of the mixture, while b makes up \(\frac{2}{3}\)
z: 630 ounces in the ratio of \(3:11\) of x and y, means that the mixture is made up of \(135\) ounces of x, and \(495\) ounces of y.
a in z: From x, there will be: \(135*0.4 = 54\) ounces of a.
From y, there will be: \(495*\frac{1}{3} = 165\) ounces of a.
Total ounces of a in z: \(54 + 165 = 219\)
Answer D
y: a:b is in the ratio of \(1:2\), which means that a makes up \(\frac{1}{3}\) of the mixture, while b makes up \(\frac{2}{3}\)
z: 630 ounces in the ratio of \(3:11\) of x and y, means that the mixture is made up of \(135\) ounces of x, and \(495\) ounces of y.
a in z: From x, there will be: \(135*0.4 = 54\) ounces of a.
From y, there will be: \(495*\frac{1}{3} = 165\) ounces of a.
Total ounces of a in z: \(54 + 165 = 219\)
Answer D
General Discussion
05 Apr 2022, 04:06
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KarishmaB
I solved this sum using WA and got a result of 218.84 which is ~219 . This is the correct answer but initially I was in splits whether to use WA as I was unsure what would be the ratio of Weights W1/W2 and whether the data is insufficient as we weren't given the final ratio of A and B in mixture Z.
Thank you
I solved this sum using WA and got a result of 218.84 which is ~219 . This is the correct answer but initially I was in splits whether to use WA as I was unsure what would be the ratio of Weights W1/W2 and whether the data is insufficient as we weren't given the final ratio of A and B in mixture Z.
Thank you
