Round off the answer correctly.. 8.7 g + 15.43 g + 19 g = 43.13 g . a. 43.130 g. b. 43.1 g. c. 43 g. d. none of the above..

Round off the answer correctly.. . 8.7 g + 15.43 g + 19 g = 43.13 g .
 a. 43.130 g.
b. 43.1 g.
c. 43 g.
 d. None of the above..
From the above given answers , most appropriate answer is "43.1" g. as according to the rounding rules, if the last number of digit is smaller than 5, then  we leave the digit we want to round to alone.