Answers

2015-11-14T16:49:15+05:30
Let the no. of students = x.
and,    no. of benches = y.
A/Q,
x = 3y+1  --------------(1)
and,
x = 4(y-1) + 0 ----------(2)
From equation 1 and 2,
3y + 1 = 4(y-1)
or,  3y + 1= 4y -4
or,  1+4 = 4y - 3y
or,  5 = y
or,  y = 5
from equation (1),
x = 3×5 + 1 = 15 + 1
or,  x = 16

Therefore no. of student = x = 16
And no. of benches = y = 5
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