Question

There are some benches.if 4 students sit on each bench then 3 benches remain empty.if 3 students sit on each bench then 3 students remain standing.find the total number of students?

Answer 1

Let the no. of students be y and no. of benches be x
1st case
y = 4x-12
2nd case
y=3x+3
4x - 12 = 3x + 3
x=15
y = 48