20% of middle school students walk to school. If the number of walkers doubles and there is no change in the numbers of non-walkers, what fraction of the students is now walkers? Write the answer as a fraction and please tell me how you got that answer.
Thank you.
2006-12-13 13:11:29 · 10 answers · asked by Billy 1 in Education & Reference ➔ Homework Help
I don't think it works...because for the number of walkers to change they must come from somewhere...you are either a walker or non walker...so the number of non walkers has to change in order for the number of walkers to double...make sense??
2006-12-13 13:19:04 · answer #1 · answered by Deana G 5 · 0⤊ 1⤋
Percentage is a ratio, meaning that it doesn't matter exactly how many you're talking about. This means you can pick whatever numbers are convenient. Since we're told that 20% are walkers, let's assume there are 100 students and 20 walk. This means 80 don't.
If we double the number to 40 without changing the non-walkers, then we now have 40 walkers out of 120 students. 40/120 = 1/3, so we're looking at 33.3%
2006-12-13 21:19:15 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The answer i think is 40% or 40/100.
Think about the answer like this (this is sort of only like an example, but the answer should apply to the question): There are 100 students at a school. 20 (20%) of them walk to school. The rest (80) take another type of transportation. If you double the number of walkers, you get 40 students. Since the number of kids havent changed, then the answer is 40 students out of 100 walk.
I am pretty sure this is the correct answer.
Hope this was helpful. =D
2006-12-13 21:18:38 · answer #3 · answered by i.heart.u 5 · 0⤊ 1⤋
Have you written the problem correctly? If the number of walkers doubles and there is no change in the number of non-walkers, where did we get all the new walkers? Are we busing them in from the district next door? 8-o In that case, they're not walking, they're riding the bus.
2006-12-13 21:18:02 · answer #4 · answered by amy02 5 · 0⤊ 1⤋
it was 20% but it doubled making it 40.so i converted 40% into a fraction by taking 40 over the total of 100and reduce that to the lowest common denominator which would be 2/5
2006-12-13 21:17:53 · answer #5 · answered by connie sue 5 · 0⤊ 1⤋
24% 1/6
2006-12-13 21:16:41 · answer #6 · answered by Tink 1 · 0⤊ 1⤋
2/10
The # of non-walkers changes the same amount of the # of walkers.
2006-12-13 21:14:22 · answer #7 · answered by jrodh8 5 · 0⤊ 1⤋
.6 is the answer
2006-12-13 21:14:06 · answer #8 · answered by JoYfUl_KiMbEr!! 2 · 0⤊ 1⤋
wouldn't it be 2/5?
2006-12-13 21:16:51 · answer #9 · answered by Anonymous · 0⤊ 1⤋
do your own homework!
2006-12-13 21:12:32 · answer #10 · answered by AshleyM2006 1 · 1⤊ 2⤋