Two brothers shared out their parents legacy.

The oldest uses the money to buy 80 horses. And the youngest bought 100 cows with his part. If each horse costs 150 € more than the cow.

How much money was the legacy?

A group of friends decided to have chocolate with churros because of the cold weather. All of them took chocolate but only 5 of them the churros. The chocolate costs 0’85 € a the churros 1’10 €.

They gave 11 € to the waiter. Did they gave him any tip? How many friends have met?