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

Jaydon Galloway

Mathematics

15 May, 03:40

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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Aaliyah Key · 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

Sonia Weiss · 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