3.25 x 25% = .81
3.25- .81 = $2.44
$2.44 is the sale price
This is
{HH, TT, TH, HT} where H = head and T = tail
The calculations for 2, 4, 8 year can be derived as follows,
For simple interest:
S.I = 
P= principle
T= Time
R= Rate
For 2 year;
S.I =
= $224
Amount = $2224
For 4 year;
S.I =
= $448
Amount = $2448
For 8 year;
S.I =
= $896
Amount = $2896
(3,367/18,500)=0.182 which is <em>18.2%</em>
The answer is 1:60 no it’s wrong