Dog price

Tereza agreed to get a dog and 6000 crowns a year for help in a dachshund breeding station. After eight months, she had to finish work and got a dog and 2000 crowns. What price does a dog have?

Correct answer:

s =  6000

Step-by-step explanation:


12m = 6000 + s
8m = 2000 + s

12·m = 6000 + s
8·m = 2000 + s

12m-s = 6000
8m-s = 2000

Row 2 - 8/12 · Row 1 → Row 2
12m-s = 6000
-0.33s = -2000


s = -2000/-0.33333333 = 6000
m = 6000+s/12 = 6000+6000/12 = 1000

m = 1000
s = 6000

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