In a competitive market, the supply schedules is p = 4 + 0.25qand the demand schedule is p = XXXXXXXXXX5qWhat would happen to the price paid by consumers and the quantity sold if(a) a per-unit tax of...

In a competitive market, the supply schedules is p = 4 + 0.25qand the demand schedule is p = 16 - 0.5qWhat would happen to the price paid by consumers and the quantity sold if(a) a per-unit tax of £3 was imposed, and(b) a proportional sales tax of 20% was imposed?