9. Find the number, from which 30.5% is 14.6.

10. How many percent did the price of a tea service decrease, when its original price was 420 kroons and its new price is 375 kroons.

11. When the hikers had passed 12 kilometres, it came out that it was 60% of the whole journey. How long was the journey? How much did they still have to go?

12. The length of a rectangle is 24 cm and the width is 75% of it. Find the perimeter and the area of the rectangle.