Question 1091572
5, Jack's age
9, Jill's age



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How many years ago was Jill twice as old as Jack?

{{{9+x=2(5+x)}}}




When Jack is three quarters as old as Jill, how old will Jill be?

{{{5+y=(3/4)(9+y)}}}
y being "in how many more years"	




When Jill was three times as old as Jack, how old was Jack?

{{{9+z=3(5+z)}}}
.
.
Jack was 2 years old.




When Jill is four times as old as Jack is today, how old will Jack be?
<i> Try this.</i>