Question

The ratio of the number of girls to that of boys in a school is 7:12. If the number of boys in the school is 1380 find :-
(i) the number of girls in the school
(ii) the total number of students in the school

Please tell the answer in easy way and in step by step explanation...​

Answer 1

Step-by-step explanation:

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Answer 2

Given - Ratio and number of boys

Find - (i) the number of girls in the school

(ii) the total number of students in the school

Solution - Let the numbers of boys and girls in school be 7x and 12x.

As per the question -

12x = 1380

$x = \frac{1380}{12}$

$x = 115$

Number of girls in school = 7x

Number of girls in school = 7*115

Number of girls in school = 805

Total number of students in school = 805 + 1380

Total number of students in school = 2185

Hence, (i) number of girls in school is 805 and (ii) total number of students in school is 2185.