Question

Ek Pariksha Mein kul chhatron ke 65 pratishat pass hue hain yadi fail Hue chhatron ki sankhya 420 ho to chhatron ki kul sankhya gyat kijiye​

Answer 1

Answer:

let the total number of children be x .

no. of student passed=65x/100

total no. of students = no. of students passed+ no. of students failed.

thus, x =65x/100+420

x=(65x+42000)/100

100x=65x+42000

100x-65x=42000

35x=42000

x=42000/35

×=1200

thus, total no. of students =x=1200