the ratio of boys and girls in a school is 7 is to 5 if the total number of students in the school is 480 find the number of boys
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6
Answer:
GIVEN :-
The ratio of boys and girls in a school = 7:5
Total number of students in the school = 480
LET,
Number of boys = 7x
Number of girls = 5x
===> 7x + 5x = 480
===> 12x = 480
===> x = 480 / 12
===> x = 40
:. Number of boys = 7x = 7 × 40 ===> 280
:. Number of girls = 5x = 5 × 40 ===> 200
HENCE,
Number of boys = 280
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Answered by
10
Answer:
the ratio of boys and girls in a school is 7 is to 5 if the total number of students in the school is 480 find the number of boys
- Ratio of boys : girls = 7:5
- Total number of students = 480
Therefore ,
- Let the number of boys be 7x
- Let the number of girl be 5x
From this we get to know that 7x + 5x that is the number of boys and girls = 480 that is the total number of students.
- 7x + 5x = 480
➡️ 12x = 480
➡️ x = 480/12
➡️ x = 40
- Number of boys = 7x
➡️ 7 × 40
➡️ 280
- Number of girls = 5x
➡️ 5 × 40
➡️ 200
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