Question

the mass of one sachet of coffee is 0.01 kg.
What is the equivalent mass in grams?

a.10 g
b.7 g
c.0.1 g
d.0.001 g

Answer 1

we know there are 1000g in 1 KILOgram, so how many grams in 0.01Kg?

$\begin{array}{ccll} grams&Kgs\\ \cline{1-2} 1000&1\\ x&0.01 \end{array}\implies \cfrac{1000}{x}=\cfrac{1}{0.01}\implies (1000)(0.01)=x\implies \stackrel{g}{10}=x$