Two alloys A and B are composed of two basic elements. The ratios of the compositions of the two basic elements in the two alloys are 5 : 3 and 1 : 1, respectively. A new alloy X is formed by mixing the two alloys A and B in the ratio 4 : 3. What is the ratio of the composition of the two basic elements in alloy X ?
Select the correct option
A) 1 : 1
B) 2 : 3
C) 5 : 2
D) 4 : 3
E) 7 : 9
Mixture A has a total of 5 + 3= 
<gadget id="calculator">5 + 3</gadget>
<output>8</output>
8 parts. If in the final mixture this represents 4 parts, then the total number of parts in mixture B should be  (8/4)*3= 
<gadget id="calculator"> (8/4)*3</gadget>
<output>6</output>
6.   So, we should take of mixture B a quantity with 3 and 3 parts, respectively.   This will give us in the final mixture (5 + 3) : (3 + 3), which means 4:3   Answer 4 : 3.
<result>D</result>
Two alloys A and B are composed of two basic elements. The ratios of the compositions of the two basic elements in the two alloys are 5 : 3 and 1 : 1, respectively. A new alloy X is formed by mixing the two alloys A and B in the ratio 4 : 3. What is the ratio of the composition of the two basic elements in alloy X ?