We have that Barbara's sales were $66800, and she gets a commission of 9% on merchandise she sells. Then the amount of comission is:
[tex]C=66800\cdot0.09=6012[/tex]For the gross pay, we just have to add 1460 to the total comissions:
[tex]GP=6012+1460=7472[/tex]therefore, the amount of the comission is $6012 and the gross pay is $7472