With betfair if the price in the lay column (pink shaded) is say 3.75 with 50 pound underneath and I can back it here with a bookie for 10.00 and took both bets, if the horse loses then would i win if I staked both bets proportionately? That is have $80 australian on the lay and $22 and it wins i come square and if it loses i make $58?

if i am right then why should i ever study form again?