## Task 2 - 140522

Anita and Peter were supposed to get 7 bottles of sparkling water for their group from the grocery store. They had an amount of money that would have been exactly enough for this. However, they could only get soda, which cost 15 pennies more per bottle than sparkling water. For their entire amount of money, they now received 4 bottles of soda.

Determine the price of a bottle of sparkling water and the price of a bottle of soda. How much did the 4 bottles of soda cost?
Anita and Peter paid $4 \cdot 15=60$ a total of 60 pfennigs more for the 4 bottles of soda than they would have for 4 bottles of sparkling water.

For these 60 pfennigs, they could have bought exactly $7-4=3$ bottles of sparkling water. Since $60: 3=20$, each bottle of sparkling water thus cost 20 pfennigs, and consequently, each bottle of soda cost 35 pfennigs.

Since $4 \cdot 35=7 \cdot 20=140$, the 4 bottles of soda cost 1.40 marks.