SOLUTION: https://brainly.com/question/50454682

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Question 1206994: https://brainly.com/question/50454682
Found 3 solutions by ikleyn, MathLover1, greenestamps:
Answer by ikleyn(52921) About Me  (Show Source):
You can put this solution on YOUR website!
.
Un professeur d’éducation physique a partagé sa classe de 24 élèves en 2groupe
le premier groupe joué au football après 15 mn il demande à quatre élèves
de rejoindre le premier groupe à ce moment il y a trois fois plus
d’élèves dans le premier groupe que dans le deuxième groupe
                    ~~~~~~~~~~~~~~~~~~

                    English translation

A physical education teacher divided his class of 24 students into 2 groups
the first group played football after 15 minutes he asked four students
to join the first group at this moment there are three times more
students in the first group than in the second group
                    ~~~~~~~~~~~~~~~~~~~


There is an uncomplete story under this link,
but there is no complete mathematical problem there.


What is the reason of posting that link to the forum,
if there is no complete Math problem under it ?



Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

his class have 24 students in total
let the first group be : x+
and second group: y+
x%2By=24....eq.1
the first group played football and after 15 minutes he asked 4 students to join the first group:
now the first group have x%2B4 students
at this time there were three times as many students in the first group than in the second group, so we have
x%2B4=3y...eq.1, solve for y
y=%28x%2B4%29%2F3

go to eq.1 and substitute y

x%2B%28x%2B4%29%2F3=24
3x%2B%28x%2B4%29=72
4x=72-4
4x=68
x=68%2F4
x=17

y=%2817%2B4%29%2F3
y=7

answer: 17 students were in the first group at the beginning

google translation:
sa classe compte 24 élèves au total
soit le premier groupe : x
et deuxième groupe : y
x%2By=24....éq.1
le premier groupe a joué au football et après 15 minutes il a demandé à 4 élèves de rejoindre le premier groupe :
maintenant le premier groupe compte x%2B4 étudiants
à cette époque, il y avait trois fois plus d'étudiants dans le premier groupe que dans le deuxième groupe, nous avons donc

x%2B4=3y...eq.1, résoudre pour y
y=%28x%2B4%29%2F3
allez à l'équation 1 et remplacez y
x%2B%28x%2B4%29%2F3=24
3x%2B%28x%2B4%29=72
4x=72-4
4x=68
x=68%2F4
x=17

y=%2817%2B4%29%2F3
y=7

réponse :17+étudiants étaient dans le premier groupe au début










Answer by greenestamps(13216) About Me  (Show Source):
You can put this solution on YOUR website!


English translation (from google translate):

A physical education teacher divided his class of 24 students into 2 groups the first group played football after 15 minutes he asked four students to join the first group at this time there were three times as many students in the first group than in the second group.

There is no question there, so of course we can't find the answer.

It is interesting to note however, that, in the google translation, the sentence structure "three times as many ... than" is not good English. When comparing numbers with phrases like that, it is correct to say "three times as many ... as", or to say "three times more ... than"; but " three times as many ... than" is not proper English.

However, the second phrase " 3 times more than" is almost always misused to mean the same as 3 times as many as; in fact, "3 times more than" means "4 times as many as" (the number, plus 3 MORE TIMES the number, which is 4 times the number).

So even if the problem contained a question, we wouldn't know what the real information is, so we wouldn't be able to answer the question.

It is further interesting to note that the English translation found by tutor @ikleyn translates the French as "three times more than"....