#test 4 prep Part 1 problem 1
def final_price(pounds, price, tax):
	return (pounds*price)*(1+tax/100)
def total(size):
	tax=int(input("enter tax "))
	sum=0
	for i in range(size):
		pounds=float(input("enter number of pounds "))
		price=float(input("price per pound "))
		result=final_price(pounds, price, tax)
		print("final prices for item", i+1, "is", format(result, ".2f"))
		sum+=result
	return sum
def main():
	size=int(input("enter number of items "))
	print("total price", format(total(size), ".2f"))
main()