12 cards : $0.25
8 cards : $0.15
If they were to win $30 they would expect to get $27 in profit.
If they were to win $10 they would expect $7.
If they were to win $0 they would expect $-3 in profit, so technically if they win nothing they lose money.
Hope I could help! :D
I hope this helps you
25.2+1/2
50+1/2
51/2
25.5
1
Rearrange terms
2
Find common denominator
3
Combine fractions with a common denominator
4
Multiply the numbers
5
Add
3
to both sides of the equation
6
Simplify
7
Multiply all terms by the same value to eliminate fraction denominators
8
Cancel multiplied terms that are in the denominator
9
Multiply the numbers
10
Subtract
11x
from both sides of the equation
11
Simplify
12
Divide both sides of the equation by the same term
13
Simplify