Answer :
Let Amy’s score be 10
Amy = 10
Amy:Bill = 10:1,
Bill = 1
Cara =1/2 Amy’s
Cara = 1/2 x 10
Cara= 5
Amy:Bill:Cara = 10:1:5
Amy = 10
Amy:Bill = 10:1,
Bill = 1
Cara =1/2 Amy’s
Cara = 1/2 x 10
Cara= 5
Amy:Bill:Cara = 10:1:5