Today, 7th grader Beverly W. collaborated with me in working out these solutions. To see if our answers are correct, beginning October 15, 2018, click here to view the official solutions published in the MATHCOUNTS Problem of the Week Archive
Update 10/15/2018: We got all but the second answer correct. Due to an oversight, we did not multiply the speed of 4 nautical miles per hour by 24 hours per day, which would have yielded the correct answer of approximately 90 days.
0 Comments
Today, 7th grader Beverly W. collaborated with me in working out these solutions. To see if our answers are correct, beginning October 8, 2018, click here to view the official solutions published in the MATHCOUNTS Problem of the Week Archive
Update 10/8/2018: We got all three answers correct. Today, 7th grader Beverly W. collaborated with me in working out these solutions. To see if our answers are correct, beginning October 1, 2018, click here to view the official solutions published in the MATHCOUNTS Problem of the Week Archive
Update 10/1/2018: We got all three answers correct. To see if my answers are correct, beginning September 24, 2018, click here to view the official solutions published in the MATHCOUNTS Problem of the Week Archive.
Update 9/24/2018: I got all three answers correct. To see if my answers are correct, beginning September 17, 2018, click here to view the official solutions published in the MATHCOUNTS Problem of the Week Archive.
Update 9/17/2018: We got all three answers correct. Today, 7th grader Beverly W. collaborated with me in working out these solutions. To see if our answers are correct, beginning September 10, 2018, click here to view the official solutions published in the MATHCOUNTS Problem of the Week Archive.
Update 9/10/2018: We got all three answers correct. Today, 7th grader Beverly W. collaborated with me in working out these solutions. To see if our answers are correct, beginning September 3, 2018, click here to view the official solutions published in the MATHCOUNTS Problem of the Week Archive.
Update 9/3/2018: We got all but #2 correct because of an oversight in following the directions: we forgot to include the event that the sum is equal to 8. Today, 7th grader Beverly W. collaborated with me in working out these solutions. To see if our answers are correct, beginning August 27, 2018, click here to view the official solutions published in the MATHCOUNTS Problem of the Week Archive
Update 8/27/2018: We got all three answers correct. Today, 7th grader Beverly W. collaborated with me in working out these solutions. To see if our answers are correct, beginning August 2o, 2018, click here to view the official solutions published in the MATHCOUNTS Problem of the Week Archive
Update 8/20/2018: We got all three answers correct. The difference between our third answer of 979 and the official answer of 980 is due to rounding preference. Today, 7th grader Beverly W. collaborated with me in working out these solutions. To see if our answers are correct, beginning August 6, 2018, click here to view the official solutions published in the MATHCOUNTS Problem of the Week Archive
Update 8/13/2018: We got all three answers correct. 
Mr. Ken Marciel
