Post-UTME Mathematics 2017 Objective — Question 42
Question 42 of 50 from the Post-UTME Screening (Post-UTME) Mathematics 2017 Objective paper, with the correct answer and a full explanation.
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Kerri ran the same distance in four different races with times 18.04, 21.39, 12.99, and 14.14 seconds. If the individual times are rounded to the nearest one-tenth of a second, what is the estimate of Kerri's total time for all four races?
- A. 66.6 seconds
- B. 66.5 secondsCorrect
- C. 66 seconds
- D. 65.5 seconds / E. 61.56 seconds
Explanation
Rounded: 18.0+21.4+13.0+14.1 = 66.5 seconds.
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