Assuming a fair die,
probability of winning 0.25 = (2/6) = 1/3
probability of losing 0.25 = (4/6) = 2/3
Expected win
= sum (proba.*winning)
=0.25*(1/3) + (-0.25)(2/3)
=-0.25/3
= - (1/12) dollars (negative sign means expecting to lose)
X/3 = 5/8
x = 5/8 * 3
x = 15/8
x = 1 7/8
The correct answer is B. 1 7/8
245-132=x
since riley has 132 out of 245, you would subtract her number from the original number and get sierra's number of minutes which is x
I think the answer is 14 because x=5 so it would be 5+9