Question

12 bags of rice weigh 126 kg one and half bags of rice weigh ?

Answer 1

12 bags=126 kg
1 bag=? kg
126÷12=10.5
1/2 bags= 10.5÷2
              = 5.25 kg

Answer 2

Weight of 1kg bag=126\12=10.5
weight of 1\2kg bag=1\2*10.5=5.25kg