240 students of a school are arranged in rows. If 4 students would be less in a row then 3 more rows

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06 Aug 2021 Total nos. of rows

240 students of a school are arranged in rows. If 4 students would be less in a row then 3 more rows will be arranged. Initially total no of rows will be.

OPtion

1) 6
2) 8
3) 10
4) 12
5) 15
6) 16
7) 18
8) 20
9) 24
10) None of the above

Solution

let number of rows=x;
then no of student in each row=240/x;
according to question----
x+3=240/((240/x)-4)
x=12
so initially no of rows=12

Correct Option: 4 Best Solution (0)