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Βιβλία Βιβλία 1 - 10 από 16 για Two men are 50 miles apart, and approach each other, one at the rate of 2 miles an....
" Two men are 50 miles apart, and approach each other, one at the rate of 2 miles an hour, the other, 3 miles an hour ; how far apart will they be at the end of 5 hours 1 64. "
Graded Lessons in Arithmetic: Book III - Σελίδα 41
των Wilbur Fisk Nichols - 1897
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