Answer:
if you round all the numbers together youll get 23 and 19 because 1 is lower than 5 and the 2 in 19.24 is lower than 5 so itll be c 23+19=42.
23.1 can be estimated to 23 rounded to 20.
19.24 can be estimated to 19 rounded to 20.
The answer would be 42 which would be rounded to 40.
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