Two samples were weighed using different balances : (i) 3.529 g (ii) 0.40g.How would the total weight of the sample be reported ?

3.529g  (number has three decimal places)+0.40g  (number has two decimal places).3.929 gSince the answer is to be given for two decimal places (the least precise factor), so, the correct answer is 3.93g. So, the correct answer is (d).