Marguerite is building a box from strips of wood. She needs 78 pieces of wood that are each 29 centimeters long. The wood comes in boards that are 6meters long. How many boards will she need?

First what you need to do is make 6meters into centimetres so what how many meters in a centimetre

100cm so you do 100 x 6 = 600

After that you do 600 divided by 28 then by 78 then you will find the answer.