There are some benches in a classroom. If 4 students sit on each bench, 3 benches are left vacant, but if 3 students sit on each bench, 3 students are left standing. What is the total no of students in the classroom?
Answers
Answered by
3
total bench let x
4 students sit on bench 3 benches are left vacant
benches are ( x-3)
4 students sit (x-3) bench
total student 4(x-3)
3 student sit on benche 3 benches are left standing
benches are (x-3)
3 student sit (x-3) benches
total student 3(x-3)
4(x-3)= 3(x-3)
4x-12= 3x-9
4x-3x= 12-9
x= 3
total no of student 4(4-3)
= 4
4 students sit on bench 3 benches are left vacant
benches are ( x-3)
4 students sit (x-3) bench
total student 4(x-3)
3 student sit on benche 3 benches are left standing
benches are (x-3)
3 student sit (x-3) benches
total student 3(x-3)
4(x-3)= 3(x-3)
4x-12= 3x-9
4x-3x= 12-9
x= 3
total no of student 4(4-3)
= 4
Similar questions