(i) 13kg 750 gm = 13.750 kg
24 kg 500gm = 24.500 kg
13.750 + 24.500 = 38.250 kg
Hence the final weight obtained on adding 2 weights of 13 kg 750g and 24 kg 500 g is 38 kg 250 gm.
(ii) 38 kg 500g = 38.500 kg
45kg 250gm = 45.250 kg
45.250 – 38.500 = 6.750 kg
Answer is 6kg 750 gm