A box of medicine contains $2, 50, 000$ tablets each weighing $20 m g$ .What is the weight of all the tablets in the box in the $g r a m$ and in $k i \log r a m$ .

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Solution

Step 1.Find weight of all the tablets.
Since weight of one tablets $= 20 m g$
Therefore weight of $2, 50, 000$ tablets $= 20 x 250000$
$= 5000000 m g$ .
Step 2. Convert $m g$ into $g r a m$ .
Since $1 m g = 0.001 g$
Therefore,
$500000 m g = 500000 x 0.001 g = 5000 g$
Step 3.Convert $m g$ into $k i \log r a m$
Since $1 m g = 0.000001 k g$
Therefore,
$500000 m g = 500000 x 0.000001 g = 5 k g$
Or
Convert $g r a m$ into $k i \log r a m$
Since $1 g = 0.001 k g$
Therefore,
$5000 g = 5000 x 0.001 g = 5 k g$
Hence the weight of all the tablets in the box is $5000 g o r 5 k g$

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