Answer on Calculus Question for ong
(m1+m2+m3+m4)/4 = 36.5& (*)
(m1+m2+m3)/3 = 36 (**)
As we know from (**),
m1+m2+m3 = 36*3 = 108. Let's substitute is into (*):
(108+m4)/4 = 36.5
Hence, m4 = 36.5*4 - 108 = 38 kg.
So, the mass of the boy who has left is 38 kg.
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