Question

if the weight of 12 sheets of paper is 30 grams how many sheet of the same paper would weight 3 and half kg​

Answer 1

=> weight of 12 sheets of paper = 30g

=> weight of 1 sheet of paper = (30 ÷ 12)g

=5/2g or 2.5g

Therefore, no. of sheets of paper weighing 3 and a half kg =

(let the no. of one sheets be 'a')

=> 'a' × 5/2 = 3500g (3 and a half kg converted to grams)

= 5a / 2 = 3500

= 5a = 3500×2

= a = 7000/5

= a = 1400

1400 sheets of paper will weight the required kilograms .