number puzzle

[bobobalde111]

steve has asked melinda her age
melinda replied "if you reverse the order of the digits and then add their sum you get half my age"
how old was she

[smouse]

not sure where the reversing the digits comes in
18 8+1=9

[DonKiddick]

If the digits of Melinda's age are A and B then her age is
10A + B
If you reverse the digits you get 10B + A,
So, 10A + B = 2(10B + A + A + B)
which simplifies to 10A + B = 22B + 4A which in turn simplifies to 6A = 21B.
Divide by 3 and you get
2A = 7B
The only single digits which satisfy this equation are
A =7 and B =2
So Melinda is 72.

[rogerr]

Sorry to be it a bit thick here but I don't see how the answer fits the question.
If she is 72 and you reverse that to get 27, what next to get to 36?

[sarumite]

rogerr ... I agree the question was a little unclear but you need to reverse the digits = 27 then add their sum (i.e.9), so 27+9 = 36.

[crofter]

Nice to have you back, bob!
I forgot it was Tuesday.

Top answer, Don!

[bobobalde111]

crofter was waiting for your post all morning
i left a post for you in the car registration thread which i hope you have recd by now
hope you can help with my literary who was he as im completely stumped and deadline is fast approaching
i posted it yesterday morning and is as yet unanswered
i have posted it again this afternoon in the hope different users are on today
any how hope someone can help

[rogerr]

Thanks Sarumite for the explanation---blinking obvious when you see it like that.
Ta
R