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Livia, Pavla, and Samuel collect knives. Pavla has more of them than Livia and Samuel combined. Livia only contains blades for a short time, so she only has 5 of them, which is the least. He has a total of 25. How many knives does Samuel have?

Correct answer:

P =  13
S =  7

Step-by-step explanation:


S+P=20
P=5+S+1

P+S = 20
P-S = 6

Row 2 - Row 1 → Row 2
P+S = 20
-2S = -14


S = -14/-2 = 7
P = 20-S = 20-7 = 13

P = 13
S = 7

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