B3. A sports equipment store has an attractive offer: when buying three items, each customer gets a discount equal to the value of the cheapest item. Jakob wants to buy a pullover that costs 30 euros, trousers that cost 50 euros, and a ski helmet that costs 20 euros.

A How much will Jakob pay in total for the pullover, trousers, and ski helmet? What percentage of the total selling price of these three items does his savings amount to?

B Write an example of a purchase where the discount percentage would be the highest. What would the percentage of savings be in this case compared to the total selling price of these three items?
B3. Jakob paid 80 EUR for the purchase. .1 point

His savings amount to 20 EUR, which is $20 \%$. 2 points

B If the items cost $a, b$, and $c$ euros, where $a \leq b \leq c$. The savings ratio is $\frac{a}{a+b+c} \leq \frac{a}{a+a+a}=\frac{1}{3}$. Equality holds only if $a=b=c$. (This was not mentioned to the contestants)

If we chose 3 items of equal value, the savings would be the highest in percentage terms. . . 1 point

The savings are approximately $33.3 \%$.