Question

The furniture factory make chairs with 4 legs and stools with 3 legs. The leg department has already made 400 legs. They have an order of 115 seats. How many chairs and how may stools should they make if they want to use all of the available legs?

Answer 1

55-chairs
60-stools
55×4=220(55-seats)
60×3=180(60-seats)
total=400 legs

Answer 2

let no of chairs with 4 legs be x
no of stools with 3 legs be y
so
4x+3y=400
x+y=115
by solving these equations
we get
x=55
y=60