Question

If a ream of 500 papers weighs 2.5kg find the mass of single sheet in;

1. Kg. 
2. g 

Answer 1

1. Kg. 
   2.5 kg500 1
   =0.005 kg 
2. g 
   1000g – 1kg
   0.005kg
   1000×0.005=5g