You are choosing between two plans at a discount warehouse. Plan A offers an annual membership fee of ​$30 and

You are choosing between two plans at a discount warehouse. Plan A offers an annual membership fee of ​$30 and you pay 90​% of the​ manufacturer’s recommended list price. Plan B offers an annual membership fee of ​$90 and you pay 70​% of the​ manufacturer’s recommended list price. How many dollars of merchandise would you have to purchase in a year to pay the same amount under both​ plans? What will be the cost for each​ plan?