Father and son

Father and son weigh together 108 kg. The father weighs 2.6 times more than his son. How much does the weight of my father and son count?

Final Answer:

a =  78
b =  30

Step-by-step explanation:


a+b=108
a = 2.6 b

a+b=108
a = 2.6·b

a+b = 108
a-2.6b = 0

Row 2 - Row 1 → Row 2
a+b = 108
-3.6b = -108


b = -108/-3.6 = 30
a = 108-b = 108-30 = 78

a = 78
b = 30

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