plz help! silvia hiked a 30-mile trail in 3 days. the first day, she hiked 50% of the total distance. the second day, she hiked 25% of the distance that remained. how many miles did she hike the third day?

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- Nov 23rd 2005, 02:23 PM #1

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- Nov 23rd 2005, 05:35 PM #2
## hmm okay..

okay, so you know the first day she did half the hike. so that is 15 miles.. the next 2 days were both 25%.. that means that on the second and third day, she split 15 miles since they are both 25%. so 7.5 miles was hiked on the third day.. does that make sense?

- Nov 24th 2005, 06:56 AM #3

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Silvia hiked a 30-mile trail in 3 days. the first day, she hiked 50% of the total distance. the second day, she hiked 25% of the distance that remained. how many miles did she hike the third day?

1st day: 50% * 30 = 15, so 30-15 = 15 left.

2nd day: 25% of distance that REMAINED: .25 * 15 = ?

Subtract the distance hiked on days 1 and 2 from total (30) to find distance hiked the 3rd day.

- Nov 24th 2005, 04:17 PM #4

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