Question

10. Fill in the blanks.

(ii) $18g=$______$\%ofakg$

Answer 1

Step 1:

$1kg=1000g\Rightarrow 1g=\frac{1}{1000}kg\Rightarrow 1g=0.001kg$

$18g=18\times 0.001=0.018kg$

Step 2:

Let us assume that $X\%$ of $1kg$ is $0.018kg$

Now convert $X\%$into fraction by dividing $X$ with $100$ and removing the $\%$sign.

$\frac{X}{100}\times 1=0.018\Rightarrow X=\frac{0.018\times 100}{1}\Rightarrow X=1.8$

Hence, $1.8\%$of $1kg$ is $0.018kgor18g$.