Doubles Betting

[good 4th]

How do i work out the pay out of running DOUBLES.

[angel417]

as a general rule of thumb add 1 to the odds of each runner and multiply,then deduct 1 to get a rough expectation of the divvy.
E.G.
4/1 into 5/1 becomes 5x6=30-1=expected divvy of $29
hope this helps