A small factory makes three-legged stools and four-legged tables.

Question

Last month the factory used 100 legs to build 3 more stools than tables. How many stools dd the factory make?

Answer 1

Jancy, this takes a system of equations. Let's let s = the number of stools and t = the number of tables.

 

3s + 4t = 100

s = t + 3

 

3(t + 3) + 4t = 100

3t + 9 + 4t = 100

               7t = 91

                 t = 13

 

s = 13 + 3 = 16

 

So, 13 tables and 16 stools!