The ratio of boys and girls in any class is11:13. If 8 girls and 4 boy

1.	The ratio of boys and girls in any class is11:13. If 8 girls and 4 boys joint the, ratiobecomes 4:5. Find the number of students.
Answer» Let the ratio be 11x and 13xBtQ,11x+4/13x+8 = 4/5=> 55x+20= 52x+32=>3x= 12=>x= 4.•. Total No of Students= 44+52= 96New No of Students= 108 ... 81 to 108 b) 98 to 63 c) 33km to 121km= 4945.174 INR

The ratio of boys and girls in any class is11:13. If 8 girls and 4 boys joint the, ratiobecomes 4:5. Find the number of students.

Answer»

Let the ratio be 11x and 13xBtQ,11x+4/13x+8 = 4/5=> 55x+20= 52x+32=>3x= 12=>x= 4.•. Total No of Students= 44+52= 96New No of Students= 108 ...

81 to 108 b) 98 to 63 c) 33km to 121km= 4945.174 INR