Joe has decided to do some promotional pricing and is running a campaign offering 10% off the $700 price. a) What is the new sale price for the bike? b) What is the profit per bike at the sale price? c) If Joe sells the usual 40 bikes per month at the discounted price, what will the shop's profit be on these bikes? d) Compare the gross profit you calculated in Q3b at the regular price ($700) to the gross profit you calculated above in c. How much more / less is Joe's gross profit in dollars?