Candies 46863

Pěťák has three times more candies than his friend Maťko. When Petek's brother Ferko took four candies from both, Petko had five times more than Maťko. How many candies does Petko have now?

Correct answer:

p =  24

Step-by-step explanation:


p=3m
p-4=5·(m-4)

p=3·m
p-4=5·(m-4)

3m-p = 0
5m-p = 16

Pivot: Row 1 ↔ Row 2
5m-p = 16
3m-p = 0

Row 2 - 3/5 · Row 1 → Row 2
5m-p = 16
-0.4p = -9.6


p = -9.6/-0.4 = 24
m = 16+p/5 = 16+24/5 = 8

m = 8
p = 24

Our linear equations calculator calculates it.



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