Mathematics: Thirty percent of all the students in a school are in a play. all except for 140 students are in the play. how many students are in the school?

Thirty percent of all the students in a school are

Ответ:

diamontehunter1632

06.01.2022

Well, if 30% of students are in the play then 100%-30% = 70% of students are not in the play, which is also 140.

So we know:

70%*x=140

70% is also 7/70:

$\frac{7}{10} x=140$

divide both sides by 7 and multiply by 10:

x=20*10

x=200

there are 200 students in the school

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Ответ:

Astudent333

21.06.2020

Mathematics

Step-by-step explanation:

by choosing 2 girls for a debate competition for the last 5 person and 2 girls and 1 boy

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Thirty percent of all the students in a school are in a play. all except for 140 students are in the play. how many students are in the school?

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