A container holding 15 ounces of a solution that is 1 part alcohol to 2 parts water is added to a container holding 8 ounces of a solution that is 1 part alcohol to 3 parts water. What is the ratio of alcohol to water in the resulting solution?  Options
A) 2:5  B) 3:7  C) 3: 5  D) 4:7  E) 7:16
Container 1 has 15 ounces in the ratio 1:2   or,   x+2x=15 gives x(alcohol)=5 and remaining water =10   container 2 has 8 ounces in the ratio 1:3   or,   x+3x=8 gives x(alcohol)=2 and remaining water =6   mixing both we have alcohol=5+2 and water =10+6   ratio thus alcohol/water =7/16   Answer 7:16
<result>E</result>
A container holding 15 ounces of a solution that is 1 part alcohol to 2 parts water is added to a container holding 8 ounces of a solution that is 1 part alcohol to 3 parts water. What is the ratio of alcohol to water in the resulting solution?