How to calculate mixed parlay multiplier?

[ike2010]

Greetings. First post here. I'm trying to find the formula for calculating mixed parlay odds. By mixed, I mean picking two money lines and one spread. For example:

X = - lines, Y = + lines

((X + 100)/X)*((Y + 100)/100)..... = multiplier

76ers -300 (money line)
Rockets +175 (money line)
Cavaliers -16 (-16-110) (spread)

((-300 + 100)/-300) * ((175 + 100)/100) * ? = multiplier

It is simple if I'm only picking money lines, but the spread throws things off. Any input is appreciated. Thanks.

[smitch124]

Just treat the spread as a -110 ML

[sharpcat]

(play 1 profit or loss x % of occurrence) + ( Play 2 profit or loss x % of occurrence) = ( both losses x % of occurrence) =

so it would look like this if all 3 were 33.3% at $100

(+54.55 x .33) + (+325 x .33) + ( -200 x .33) =
18.05 + 107.25 + -66 = +59.30 EV

of course the cavaliers losing the spread should be more like 50% so it would be

(+54.55 x .25) + (+325 x .25) + (-200 x .50) =
13.64 + 81.25 + -100 = -15.11 EV

[pokernut9999]

Use the parlay calculators.

[sharpcat]

sorry just realized this play had four out comes, just simply add in the outcome $$$ x % of occurrence of this out come also.