The ratios of copper to zinc in alloys A and B are 3 : 4 and 5 : 9, respectively. A and B are taken in the ratio 2 : 3 and melted to form a new alloy C. What is the ratio of copper to zinc in C?
A. 3 : 5
B. 8 : 15
C. 9 : 11
D. 27 : 43
Answer: Option D
Solution(By Examveda Team)
$$\eqalign{ & A \to 3:4 = {7_{ \times 2 \times 2}} \cr & B \to 5:9 = {14_{ \times 3}} \cr & {\text{Copper}}:{\text{Zinc}} \cr & \,\,\,\,\,\,\,\,\,\,\,\,{\text{12}}\,\,\,{\text{:}}\,\,\,{\text{16}} \cr & \,\,\,\,\,\,\,\,\,\,\,\,{\text{15}}\,\,\,{\text{:}}\,\,\,{\text{27}} \cr & \,\,\,\,\,\,\,\,\,\,\overline {\,\,27\,:\,43\,\,} \cr} $$Related Questions on Ratio
If a : b : c = 3 : 4 : 7, then the ratio (a + b + c) : c is equal to
A. 2 : 1
B. 14 : 3
C. 7 : 2
D. 1 : 2
If $$\frac{2}{3}$$ of A=75% of B = 0.6 of C, then A : B : C is
A. 2 : 3 : 3
B. 3 : 4 : 5
C. 4 : 5 : 6
D. 9 : 8 : 10
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