1.2x-5=x+5
0.2x= 10
x=50
Original barrel 1.2x = 1.2 * 50 = 60kg.
24 cm, 18 cm, 12 cm The greatest common divisor is 6 cm.
18/6=3
12/6=2
24/6=4
2*3*4=24 pieces
The side is 6 cm long and sawed into 24 pieces.