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22 Feb 2026, 20:00
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Difficulty:
35%
(medium)
Question Stats:
75% (02:30) correct
25%
(03:01)
wrong
based on 110
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Three alloys - A, B, and C contain only Copper and Zinc in the ratio 1:2, 2:3, and 1:4 respectively. The three alloys are mixed in the ratio 2:3:5 to form a new alloy. What is the ratio of Copper and Zinc in the new alloy?
A. 29 : 61
B. 37:59
C. 43:107
D. 61:29
E. 107:43
A. 29 : 61
B. 37:59
C. 43:107
D. 61:29
E. 107:43
22 Feb 2026, 22:11
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Solve using weighted averages:
1/3*2/10+3/10*2/5+5/10*1/5 (Taking only Copper ratios multiplied with the ratios combined)
You will get 43/150 which is 43:107
Answer: Option C.
1/3*2/10+3/10*2/5+5/10*1/5 (Taking only Copper ratios multiplied with the ratios combined)
You will get 43/150 which is 43:107
Answer: Option C.
ExpertsGlobal5
23 Feb 2026, 07:25
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say total is 150
from mixed ratio, A=30 ,B = 45, C=75
In A=30, copper = 10, zinc= 20
In B=45, copper= 18, zinc = 27
In C=75, copper= 15 , zinc= 60
so total copper= 43
total zinc= 107
ratio = 43/107
option C
ExpertsGlobal5Three alloys - A, B, and C contain only Copper and Zinc in the ratio 1:2, 2:3, and 1:4 respectively. The three alloys are mixed in the ratio 2:3:5 to form a new alloy. What is the ratio of Copper and Zinc in the new alloy?
A. 29 : 61
B. 37:59
C. 43:107
D. 61:29
E. 107:43
from mixed ratio, A=30 ,B = 45, C=75
In A=30, copper = 10, zinc= 20
In B=45, copper= 18, zinc = 27
In C=75, copper= 15 , zinc= 60
so total copper= 43
total zinc= 107
ratio = 43/107
option C
ExpertsGlobal5Three alloys - A, B, and C contain only Copper and Zinc in the ratio 1:2, 2:3, and 1:4 respectively. The three alloys are mixed in the ratio 2:3:5 to form a new alloy. What is the ratio of Copper and Zinc in the new alloy?
A. 29 : 61
B. 37:59
C. 43:107
D. 61:29
E. 107:43
