100 square decimeter: 1 square meter. 2 tons: 250 kg reduction ratio

100 square decimeter: 1 square meter. 2 tons: 250 kg reduction ratio

100 square decimeter: 1 square meter = 100:100 = 1:1 (1 square meter = 100 square decimeter)
2T: 250kg = 2000:250 = 8:1 (2t = 2000kg)