Abena needed to know about how much the sum of 19.6, 23.8, and 38.4 is. She correctly rounded each of these numbers to the nearest whole number. What three numbers did she use?
a. 19, 23, 38
b. 19, 24, 38
c. 20, 24, 38
d. 20, 24, 39
ANSWER:
c
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