Question

 

Jeremy has a box of 500 nails that weighs 1.35 kilograms. He uses 60 nails to build a birdhouse. How much do the nails in the birdhouse weigh?

Jeremy has a box of 500 nails that weighs 1.35 kilograms. He uses 60 nails to build a birdhouse. How much do the nails in the birdhouse weigh?

 

Answer 1

500 nails weigh 1.35 kg, so 60 nails weigh (60/500)1.35=0.162kg or 162g. The weight of the box is assumed to be negligible.