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larisa86 [58]
3 years ago
6

In Mrs.Ramons class, the ratio of boys and girls is 2 to 3. The class has 30 students. How many girls are in Mrs.Ramons class?

Mathematics
1 answer:
Kay [80]3 years ago
4 0

Answer:

18 girls

Step-by-step explanation:

2 / [2+3] x 30 =

2/5 x 30 =60/5 =12 are girls.

30 - 12 =18 are boys, so that:

18:12 =3:2

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Answer: There are 20 students and 4 students are not here today.

Step-by-step explanation:

If the number of students = 4

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So, the fraction of student absent is also written as

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According to question, it becomes,

\dfrac{x}{5}=\dfrac{x}{4}-1\\\\\dfrac{x}{5}=\dfrac{x-4}{4}\\\\4x=5(x-4)\\\\4x=5x-20\\\\4x-5x=-20\\\\-x=-20\\\\x=20

Hence, there are 20 students in our school.

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