quick plz i only have 8 min Williams betting rate for a bet

quick plz. i only have 8 min.

William’s betting rate for a bet on Ohio State winning the game is ¾, and he agrees to a bet with Linda, who bets against Ohio State winning the game. If the stakes are $10, then how much does Linda risk with her bet?

Solution

Pay off for William = 10 *3/4 = $7.5

Since stake is $10, Linda bets 10 - 7.5 = $2.5 which is her risk.