Jawapan

2016-06-01T08:52:18+08:00
A + s + A = 151 kg
a = 43 kg
A = 4/5s

s + A = 108 kg
s = 108 kg - A

A = 4/5 ( 108 - A )
A = 86.4 - 0.8A
1.8A = 86.4
A = 48 kg

s + 48 kg = 108 kg
s = 60 kg