1- 1/ 10-7/ 10=2/ 10= 1/5
100 *110 =10 kg
(2) A bag of 30 kilograms of rice was eaten for four fifths on the first day, and there were (29.2) kilograms left. I ate four fifths of this bag of rice in January, and there are (6) kilograms left.
30-4/5=30-0.8=29.2 kg
30*( 1-4/5)=6 kg