Question

If the weight of 12 sheet of thick paper is 40 grams. How many sheets of the same paper would weight $\frac{5}{2}$ kilograms?

Answer 1

Weight of one sheet $=x$ g
$12\times x=40$ g
$x=\frac{40}{12}=3.33$ g
Total weight $=\frac{5}{2}$ kg $=2.5$ kg $=2500$ g
Number of sheets $=\frac{2500}{3.33}$
$=750$ full sheets