A cross-country skier covered 1/3 of her race in one hour, 2/5 of the race during the next hour, and the remainder of her race in the third hour. What fraction of the race did the skier cover during her third hour?

Question

Mathematics

Justice Schmidt

Today, 06:33

A cross-country skier covered 1/3 of her race in one hour, 2/5 of the race during the next hour, and the remainder of her race in the third hour. What fraction of the race did the skier cover during her third hour?

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Answers (2)

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Brynlee · Answer 1

The answer is 4/15. 1/3 + 2/5 = 11/15 Because 1/3 is equivalent to 5/15 and 2/5 is equivalent to 6/15. 5/15 + 6/15 = 11/15. 15/15 - 11/15 = 4/15

Willie Barron · Answer 2

Let x be the last portion,

The total distance he run : 1/3 + 2/5 + x = 1

x = 1 - (1/3+2/5) = = > Reduce to the same denominator:

& you will find x=4/5