mimi is four years older than ronald. five years ago she was twice as old as he was. find their ages now

Question

henryblah · Answer

Let mimi's age now be x. Ronald now to be y.
y+4=x
x-5=2(y-5)
Solve simultaneously

radar · Answer

Let R = Ronald's age now.
then, Mimi is R+4 now  now for the 5 years ago scenario:
R+4 -5 = 2(R-5)
R-1=2R-10
-R=-9
R=9 Ronald age now
9+4=13 Mimi age now
5 yrs ago they were 4 and 8 respectively, note that Mimi is twice as old as Ronald.
Same answer as Henryblah's method but only using a single variable.

anonymous · Answer

Solve the following equations for m and r:$$\left\{m-4=r,\frac{m-5}{r-5}=2\right\}$$$$\{m=13,r=9\} $$

anonymous · Answer

@radar
I gave you a medal because you were there first with the solutions.

henryblah · Answer

Hmm, I don't like giving answers out. I just give helpful prods :)

radar · Answer

@Henryblah, Sometimes a prob needs a push lol