There are two alloys madeup of copper and aluminium. In the first alloy copper is half as much as aluminium and in the second alloy copper is thrice as much as aluminium. How many times the second alloy must be mixed with first alloy to get the new alloy in which
copper is twice as much as aluminium?
Choose the correct choice from the following choices
A) 2
B) 3
C) 4
D) 5
E) 6
first alloy second alloy   4 Al 4 Al   Required alloy   4 Al   2 1   Thus, 4opper in first alloy = 1/3   copper in second alloy = 3/4   copper in required alloy =2/3   ANSWER:4
<result>C</result>
There are two alloys madeup of copper and aluminium. In the first alloy copper is half as much as aluminium and in the second alloy copper is thrice as much as aluminium. How many times the second alloy must be mixed with first alloy to get the new alloy in which
copper is twice as much as aluminium?