Răspuns :
(a + b + c) : 3 = 100 => a + b + c = 300
a = 60 => b + c = 240 => 2b + 2c = 480
2b = 3c => 5c = 480 => c = 96 => b = 144
a = 60 => b + c = 240 => 2b + 2c = 480
2b = 3c => 5c = 480 => c = 96 => b = 144
(a+b+c)/3=100 => a+b+c=300;
a=60 => b+c=240 <=> 2b+2c=480;
2b=3c => 3c+2c=480 <=> 5c=480 => c=96; b=240-96=3*96/2=3*48=144.
a=60 => b+c=240 <=> 2b+2c=480;
2b=3c => 3c+2c=480 <=> 5c=480 => c=96; b=240-96=3*96/2=3*48=144.