Question

Berat a+berat b :61 kg. berat a+berat c :92 kg berat b+ beratc:97 kg gram berapa jumlah berat 3 orang teraebut

Answer 1

A + b = 61
a + c = 92 ---> c - b = 92 - 61 = 31
b + c = 97 ---> c - a = 97 - 61 = 36
a - b = 31 - 36 = -5
a - (61-a) = -5
2a = 56
a = 28 --> b = 61-a = 33
c = 36 + a = 64

berat masing2 :
a = 28 kg
b = 33 kg
c = 64 kg

berat ketiganya = a + b + c = 125 kg