Final answer:
The formula for the cost in euros to purchase and ship purses is r(n) = (275n+115)/6.
Step-by-step explanation:
To find the formula for the cost in euros to purchase and ship purses, we need to apply the conversion rate given by r(d)=5/6d to the cost function p(n)=55n+23. To do this, we substitute the expression for p(n) into r(d) and simplify:
r(n) = (5/6)*(55n+23)
r(n) = (275n+115)/6
Therefore, the formula for the cost in euros to purchase and ship purses is r(n) = (275n+115)/6.