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Simple seventh grade math?
Suppose 25 out of 175 people said they liked to play disc golf, and five out of every 12 of those people that do play disc golf play have a personalized flying disc At the same rate in a group of 252 people predict how many you would expect to have a personalized flying disc
Explain how to do this in a moderately simple way, if possible show me a couple of ways
3 Answers
- 1 decade agoFavorite Answer
25/175 like disc golf.
= 1/7 like golf
5/12 of the 1/7 people who like disc golf, have personalized flying discs.
Whenever you hear the word "of," you have to multiply.
Therefore, you have to multiply 5/12 * 1/7 = 5/84
This means that 5/84 of the population first surveyed (175 people) has personalized flying discs. Now we need to find out that, if 5 of every 84 people have personalized flying discs, how many people of every 252 people will have them.
This leads us to: x / 252 (let x = number of people with personalized flying discs)
To get this answer, you divide 252 by 84 in order to find how many times bigger the new population is than the last, in order to stay proportionate. 252 / 84 = 3.
Therefore, 5 * 3 = x, which is 15. This means that we predict that 15 people out of a group of 252 will have personalized flying discs.
- 1 decade ago
22/175 = 1/7
252 X 1/7 = 36 people (have personalized flyijng disc)
12/25= 0.48
36 X 0.48 = 17.28 (round off to 17 person)
Answer 17.28 = 17
- 1 decade ago
15 people.
25/175=x/252
6300=175x
x=36
36*5/12=15
x=15
simple cross multiplication
Source(s): im a 7th grader taking algebra I
