Topsoil question

Question

A 40-pound bag of topsoil will cover a surface area of 12 ft2.

 

a) How many pounds of topsoil are needed to cover a surface area of 480 ft2 ?

 

 

b) How many bag of topsoil must be purchased to cover a surface area of 480 ft2? 

Answer 1

a) The first thing you need to do is calculate how many bags of topsoil you need to cover the 408 ft² area. You take 480ft² and divide it by 12ft² per bag which gives you 40 bags of topsoil.

 

You know that each bag of topsoil weighs 40 lbs, so the next step is finding the total weight. You get this by multiplying the number of bags by the weight per bag, so 40 bags * 40 lbs per bag which gives you a total of 1,600 pounds of topsoil.

 

b) You solve the answer to this in the first part of a.

 

Hope this helps!

Answer 2

Hello, for a), you just divide 480 by 12 to get how many bags you need, which is 40. 40 bags times 40 pounds each gives you a final answer of 1600 pounds.

 

You actually find the answer to b) by solving a).