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Evgesh-ka [11]
3 years ago
8

The ratio of the number of boys to the number of girls at Liam's school is 4:5. There are 270 students at his school. Statement

1: The number of boys at school is 4/5 the number of girls.
Mathematics
1 answer:
Aleks04 [339]3 years ago
6 0

Answer:

"statement 1: The number of boys at the school is \frac{4}5 of the number of girls." is true.

Step-by-step explanation:

Given:

Ratio of Number of boys to the number of girls = 4 : 5

Total number of students = 270

To find:

Number of boys in terms of number of girls = ?

Solution:

As per given statement,

Let, Number of boys = 4x

Let, Number of girls = 5x

Total number of students = Number of boys + Number of girls = 270

\Rightarrow 4x+5x =270\\\Rightarrow 9x=270\\\Rightarrow \bold{x  = 30}

Therefore, number of boys = 4 \times 30 = 120

And, number of girls = 5 \times 30 = 150

As per Statement 1:

Finding \frac{4}5 of the number of girls:

\dfrac{4}{5}\times 150 = 4 \times 30 = 120 = Number of boys.

Finding \frac{4}9 of the total number of students:

\frac{4}{9}\times 270= 4 \times 30 = 120 = Number of boys.

Number of boys is equal to \frac{4}9 of total number of students.

So, "statement 1: The number of boys at the school is \frac{4}5 of the number of girls." is true.

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