Abuilding contractor needs 500 sheets of drywall. which is the most cost-effective way to buy them?

a.50 sheets at a time for $600
b.100 sheets at a time for $800
c.250 sheets at a time for $2,500
d.500 sheets at a time for $4,500

The most cost-effective way to buy them is according to Option B

Option B: 100 sheets at a time for $800

Step-by-step explanation:

We are given that building contractor needs 500 sheets of drywall

A)50 sheets at a time for $600

Cost of 50 sheets = 600

Cost of 1 sheet =

Cost of 500 sheets =  

                                =  

Thus cost of 500 sheets is $6000 according to option A.

B)100 sheets at a time for $800

Cost of 100 sheets =800

Cost of 1 sheet =

Cost of 500 sheets =  

                                =  

Thus cost of 500 sheets is $4000 according to option B.

C)250 sheets at a time for $2,500

Cost of 250 sheets =2500

Cost of 1 sheet =

Cost of 500 sheets =  

                                =  

Thus cost of 500 sheets is $5000 according to option C.

D)500 sheets at a time for $4,500

Thus cost of 500 sheets is $4500 according to option D.

Hence the most cost-effective way to buy them is according to Option B.

Option B: 100 sheets at a time for $800

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step-by-step explanation:

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