John works at a dry goods store and needs to determine the selling price for work boots. The work boots have a cost of $45. The manager asked John to price the work boots with a 70% target gross margin. John has priced the work boots with a 70% markup percentage.

a) What selling price does the manager want?

b) What selling price has John calculated?

c) If there are 40 work boots, how much will the store lose in sales if the price is not corrected?