A small factory that produces only upholstered chairs and so

Ans - B

1C +4S = 300 - a

1 ) doesn't give any information about C and S
2) C + S = 150 - b

2 is sufficient to find S by solving a and b

Gmat09_5ALL wrote:Ans - B

1C +4S = 300 - a

1 ) doesn't give any information about C and S
2) C + S = 150 - b

2 is sufficient to find S by solving a and b

where are you getting the "-a" and "-b" from, at end of 1c+4s=300 -a and C+s=150 -b

thx,

sd

The -a and -b are to refer to the equations that have been made... naming the equation so that they dont have to written again

The word problem gives us the ratio:

1C:4S

so we can write this as: x+4x=Total

If we are given the total amount of cushions, then we can solve for the equation


(1) Last week the factory produced more chairs than sofas.
This gives us no useful information



(2) Last week the factory produced a total of 150 chairs and sofas.
x+4x=150
5x=150
x=30

B IS SUFFICIENT