A husband and wife can complete a certain task in 1 and 2 hours respectively. Their children, Rae and Herman, can complete the same task in 5 and 6 hours, respectively. What is the ratio of the couple's time working together to complete the task to the children's time working together to complete the task?  Choose the correct answer
A) a)11:45  B) b)3:10  C) c)12:23  D) d)5:18  E) e)10:3
couples one hour work=1/1+1/2=3/2   so total time=2/3..   now, kids one hour work=1/5+1/6=11/30   so total time=30/11..   ratio=2/3:30/11=11/45   ans a)11:45
<result>A</result>
A husband and wife can complete a certain task in 1 and 2 hours respectively. Their children, Rae and Herman, can complete the same task in 5 and 6 hours, respectively. What is the ratio of the couple's time working together to complete the task to the children's time working together to complete the task?