The ratio of boys and girls in a school that has 480 students is 7 : 9. What will be the ratio of boys and girds if 3 more girls are admitted to the school?
Given:
Total strenght of school = 480
Ratio of boys and girls in the school = 7:9
Solution:
Let the ratio of boys and girls be 7x and 9x respectively
Then 7x+9x = 480
16x =480
x= 30
Number of boys = 7x = 210
Number of girls = 9x =270
If 3 more girls are admitted then number of girls = 273
New ratio of boys and girls =
Ratio of boys and girls is 10:13
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