▁returns ▁£ 1 0 0 . 0 0 ▁( ex actly ) ▁for ▁an ▁away ▁win ▁ ▁Total ▁st akes ▁received ▁— ▁£ 1 2 0 . 0 0 ▁and ▁a ▁maximum ▁p ayout ▁of ▁£ 1 0 0 . 0 0 ▁ir res pective ▁of ▁the ▁result . ▁This ▁£ 2 0 . 0 0 ▁profit ▁represents ▁a ▁ 1 6 ▁% ▁profit ▁on ▁turn over ▁( 2 0 . 0 0 / 1 2 0 . 0 0 ). ▁ ▁In ▁reality , ▁book m akers ▁use ▁models ▁of ▁reducing ▁that ▁are ▁more ▁complicated ▁than ▁the ▁model ▁of ▁the ▁" ide al " ▁situation . ▁ ▁Book maker ▁margin ▁in ▁English ▁football ▁le agues ▁ ▁Book maker ▁margin ▁in ▁English ▁football ▁le agues ▁decre ased ▁in ▁recent ▁years . ▁The ▁study ▁of ▁six ▁large ▁book m akers ▁between ▁ 2 0 0 5 / 0 6 ▁season ▁and ▁ 2 0 1 7 / 2 0 1 8 ▁season ▁showed ▁that ▁average ▁margin ▁in ▁Premier ▁League ▁decre ased ▁from ▁ 9 % ▁to ▁ 4 %, ▁in ▁English ▁Football ▁League ▁Championship , ▁English ▁Football ▁League ▁One , ▁and ▁English ▁Football ▁League ▁Two ▁from ▁ 1 1 % ▁to ▁ 6 %, ▁and ▁in ▁National ▁League ▁from ▁ 1 1 % ▁to ▁ 8 %. ▁ ▁Over round ▁on ▁multiple ▁bet s ▁ ▁When ▁a ▁pun ter ▁( b ett or ) ▁comb ines ▁more ▁than ▁one ▁selection ▁in , ▁for ▁example , ▁a ▁double , ▁tre ble ▁or ▁accum ulator ▁then