I need HELP!

Hayley
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I need HELP! Nov 27, 2010 16:28:40 GMT -5

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Post by Hayley on Nov 27, 2010 16:28:40 GMT -5

Ok, my cousin gave me this math problem, and I HAVE to solve it by 6 pm tonight. I cannot figure out the answer. All of you ~~cept Matt~~ are older than me, so I figured you would be better able to find the answer. And its not 10.

Theres a vertical 10 ft pole standing upright on a flat surface. An inchworm is trying to climb the pole. During the daytime, it climbs 2 ft up the pole. Every night, it slides 1 ft back down the pole. How many days does it take for the inchworm to reach the top of the pole?

It would help if you could explain it, too.

Thanks guys,
Hayley

Last Edit: Nov 27, 2010 16:29:51 GMT -5 by Hayley

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shrimp
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I need HELP! Nov 27, 2010 16:33:35 GMT -5

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Post by shrimp on Nov 27, 2010 16:33:35 GMT -5

Basically, there's a pole, you see? And the pole is 10 ft. tall.

So there's this worm. We'll name him Wormy Von Wormypants. He's an aristocrat who is trying to get to a wedding on the top of the pole. So everyday he climbs 2 feet. But during the night, it becomes cold, and the Wormy sildes downwards due to sheer freezing his nephridium off.

So on Day one, he climbed two feet, and slid down one foot. Therefore, he moved up by a foot. (2ft. minus 1 ft. = 1 ft.)

The same thing would occur on day 3, day 4, etc. It would be helpful to draw a diagram.

So basically, he would reach the top of the pole on Day 10, so 10 days.

Last Edit: Nov 27, 2010 16:37:25 GMT -5 by shrimp

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I need HELP! Nov 27, 2010 16:39:32 GMT -5

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Post by ᕙʕ•ᴥ•ʔᕗ on Nov 27, 2010 16:39:32 GMT -5

Well, yeah, it wouldn't be 10.

Okay, this is one of those problems that you have to go step-by-step.

Let's use a table.

Day # Day Night
Day 1 2 1
Day 2 3 2
Day 3
Day 4
Day 5
Day 6
Day 7
Day 8
Day 9
Day 10
Day 11

Fill out the rest of the chart and make sure you go Day # --> Day --> Night. Don't try to solve ahead. You should get the correct answer this way.

^credit to Shrimp

char info yayy

Skylar Merchant 140 POSTS last seen Mar 17, 2023 19:56:29 GMT -5	I need HELP! Nov 27, 2010 16:41:28 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Skylar on Nov 27, 2010 16:41:28 GMT -5 9 days. I used Dee's table to finalize the answer, but I did mental math at first. I came up with 9 both times though, so it should be right.
	Last Edit: Nov 27, 2010 16:43:55 GMT -5 by Skylar

Bane Tribute 486 POSTS last seen May 21, 2019 21:36:50 GMT -5 For great villainy!	I need HELP! Nov 27, 2010 19:31:40 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Bane on Nov 27, 2010 19:31:40 GMT -5 In case this helps, it's nine because he makes it to the top during the day on day 9, and since he's at the top he can't slide down. The time is probably up, but not where I live.
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