Please someone help me!

225 chairs

Step-by-step explanation:

Let the number of chairs ordered that cost $20 each be x and the number of chairs that cost $40 each is y.

Total cost= 20x +40y

Given that the company bought $6000 worth of chairs,

20x +40y= 6000

Dividing both sides by 20:

x +2y= 300 (1)

x= 2y (2)

Substitute (2) into (1):

2y +2y= 300

4y= 300

y= 300 ÷4

y= 75

Subst. y= 75 into (2):

x= 2(75)

x= 150

Total number of chairs ordered

= x +y

= 150 +75

= 225

i think the answer is b.

step-by-step explanation:

not 100% sure though.