The old lady jumping rope in the cartoon at the figure below is counting one at a time. Assume that she jumps the rope 50 times per minute and that she jumps 7 hours a day, 4 days a week, 30 weeks a year. Estimate the length of time necessary for her to jump the rope the number of times indicated in the cartoon.
?
?
A. 21,748.6 centuries
B. 21,750.1 centuries
C. 21,747.1 centuries
D. 21,748.1 centuries
E. 21,748.2 centuries
Answer: D
Mathematics
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