Mathematics · Time, Speed and Distance
A runner completed a 40 km race in 3 hours. She changed her speed after completing each quarter of the distance such that the ratio of the speeds in the first, second, third, and fourth quarters was 2:3:4:5 respectively. In approximately how many minutes did she complete the last quarter of the race?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 132 minutes
- 231 minutes
- 329 minutes
- 428 minutes✓
Correct answer
28 minutes
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