number puzzle

[bobobalde111]

lend me a pound said jill
youve got twice as much as i have

not likely jack replied then ud have only one and a half times as much as you

how much did jack have

[Trojanfarce]

�10

[crofter]

Too early for me bob. I was still in the shower at 07.46! Method of solution given below:

If Jill has �X and Jack has �Y, then ... 2X = Y

After borrowing, we would have 1.5 ( X + 1 ) = Y - 1

Eliminating Y, we get ... !.5 ( X + 1) = 2X - 1
which when doubled gives ... 3 ( X + 1 ) = 4X - 2

This has solution X = 5 (so Y = 10) as Trojanfarce rightly states.