Two different solutions of alcohol with respective proportions of alcohol to water of 3:1 and 2:3 were combined. What is the concentration of alcohol in the new solution if the first solution was 1.5 times the amount of the second solution?
Choose the correct choice from the following choices: A) 61 B) 65 C) 68 D) 70 E) 72
SOL:   Lets assume that 15L of sol1 was mixed with 10L of sol2.   61lcohol in Sol1: 15*3/4 = 11.25L   61lcohol in Sol2: 10*2/5 = 4L   Total 61lcohol in the mixed solution of 25L = 11.25 + 4= 
<gadget id="calculator">11.25 + 4</gadget>
<output>15.25</output>
15.25L   61lcohol concentration in the new sol:  (15.25/25)*100= 
<gadget id="calculator"> (15.25/25)*100</gadget>
<output>61</output>
61%   61NSWER:61
<result>A</result>
Two different solutions of alcohol with respective proportions of alcohol to water of 3:1 and 2:3 were combined. What is the concentration of alcohol in the new solution if the first solution was 1.5 times the amount of the second solution?