Question

the weight of a medicine is 25 mg. find the weight of a box containing 20000 such medicine in gram.

Answer 1

$= >$

↪1milligram =0.001gram = 10^-3gram

⚫weight of 1 medicine = 25 mg = 25 x10^-3

⚫Box containing 20000 medicines,

➡weight of the box =

20000 x 25 x 10 ^-3

= 20 x 10^+3 x 25 x 10^-3

= 20x25

=500gram

weight of the box is 500gram •