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In week 5, the athlete plans to decrease her training time in each spo
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06 Dec 2022, 04:43
06 Dec 2022, 04:43
Expert Reply
00:00
Question Stats:
58% (01:36) correct
41% (03:09) wrong based on 24 sessions
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In week 5, the athlete plans to decrease her training time in each sport by 10% to 20% of the hours she trained in week 4. Which of the following are possible numbers of hours she could bike in week 5 ?
Indicate all such values.
3.9
5.6
7.2
9.8
16.6
22.8
Re: In week 5, the athlete plans to decrease her training time in each spo
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10 Dec 2022, 04:00
10 Dec 2022, 04:00
Expert Reply
OE
You can determine what hours make a 10−20% decrease by calculating 10% and 20% of the original value and subtracting, or, to save time, just calculate 90% and 80% of the original value. She biked 8.5 hours in week 4. 80% × 8.5 = 6.8, and 90% × 8.5 = 7.7, so any number of hours between 6.8 and 7.7 will be acceptable. Choice (C) is the only answer that falls in that range.
You can determine what hours make a 10−20% decrease by calculating 10% and 20% of the original value and subtracting, or, to save time, just calculate 90% and 80% of the original value. She biked 8.5 hours in week 4. 80% × 8.5 = 6.8, and 90% × 8.5 = 7.7, so any number of hours between 6.8 and 7.7 will be acceptable. Choice (C) is the only answer that falls in that range.
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