# Czech crowns

### Correct answer:

**22**Kč

### Step-by-step explanation:

10 Kč: 10 = 3 × 3 + 1; 10 = 2 × 5 + 0

11 Kč: 11 = 3 × 3 + 2; 11 = 2 × 5 + 1

12 Kč: 12 = 4 × 3 + 0; 12 = 2 × 5 + 2

13 Kč: 13 = 4 × 3 + 1; 13 = 2 × 5 + 3

14 Kč: 14 = 4 × 3 + 2; 14 = 2 × 5 + 4

15 Kč: 15 = 5 × 3 + 0; 15 = 3 × 5 + 0

16 Kč: 16 = 5 × 3 + 1; 16 = 3 × 5 + 1

17 Kč: 17 = 5 × 3 + 2; 17 = 3 × 5 + 2

18 Kč: 18 = 6 × 3 + 0; 18 = 3 × 5 + 3

19 Kč: 19 = 6 × 3 + 1; 19 = 3 × 5 + 4

20 Kč: 20 = 6 × 3 + 2; 20 = 4 × 5 + 0

21 Kč: 21 = 7 × 3 + 0; 21 = 4 × 5 + 1

22 Kč: 22 = 7 × 3 + 1; 22 = 4 × 5 + 2 ⇐⇐⇐⇐

23 Kč: 23 = 7 × 3 + 2; 23 = 4 × 5 + 3

24 Kč: 24 = 8 × 3 + 0; 24 = 4 × 5 + 4

25 Kč: 25 = 8 × 3 + 1; 25 = 5 × 5 + 0

26 Kč: 26 = 8 × 3 + 2; 26 = 5 × 5 + 1

27 Kč: 27 = 9 × 3 + 0; 27 = 5 × 5 + 2

28 Kč: 28 = 9 × 3 + 1; 28 = 5 × 5 + 3

29 Kč: 29 = 9 × 3 + 2; 29 = 5 × 5 + 4

30 Kč: 30 = 10 × 3 + 0; 30 = 6 × 5 + 0

#### You need to know the following knowledge to solve this word math problem:

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