Question

A box of medicine tablets contain $2,00,000$ tablets each weighing $20mg$. What is the total weight of all the tablets in the box in grams and in kilograms?

Answer 1

Given, A box of medicine tablets contain $2,00,000$ tablets each weighing $20mg$.

The total weight of all the tablets in the box

$$\begin{gathered} =2,00,000\times 20mg \\ =40,00,000mg \\ =\frac{40,00,000g}{1000} \\ =4,000g \\ =\frac{4,000kg}{1000} \\ =4kg \end{gathered}$$

Hence,total weight of all the tablets in the box is $4000g$ or $4kg$.