how to solve a, and b

Hayk Co. ollen a colfee mug as a premium for every ten so-cent candy bar wrappers presented by customens together with $1.00. The purchase price of esch mug te the company ia 90 cents; in addition it costs 60 cents to mall oach mug. The rosults of the premium plan for the years 2014 and 2015 ase at follows (astumi all purchases and sales are for cashit Instructions A. Propare the goneral pumal entres that thould be maje in 2014 and 2016 reited to the above plan by lipye Co uthement at the end of 2014 and 2015 Hayk Co. ollen a colfee mug as a premium for every ten so-cent candy bar wrappers presented by customens together with $1.00. The purchase price of esch mug te the company ia 90 cents; in addition it costs 60 cents to mall oach mug. The rosults of the premium plan for the years 2014 and 2015 ase at follows (astumi all purchases and sales are for cashit Instructions A. Propare the goneral pumal entres that thould be maje in 2014 and 2016 reited to the above plan by lipye Co uthement at the end of 2014 and 2015