Given
Jake has 18 candy
Gave bob 1/3 and from candy remaining he gave Dana 1/6
Procedure
First let's calculate the amount of candy given to Bob.
Bob
[tex]\frac{1}{3}\cdot18=6\text{candys}[/tex]Remaining candy
[tex]18-6=12\text{candys}[/tex]Dana
[tex]12\cdot\frac{1}{6}=2\text{ candy}[/tex]Remaining
[tex]12-2=10\text{ candy}[/tex]The amount of candy left for Jack is 10 candy