Question

The weight of $20$ tiles is $5kg.$ What will be the weight of $7$such tiles $?$

Answer 1

The weight of $20$ tiles $=5kg$

The weight of $1$tile $=\frac{5}{20}=\frac{1}{4}kg$

Hence, the weight of $7$such tiles $=7\times \frac{1}{4}$

$=\frac{7}{4}kg$

$$\begin{gathered} =\frac{7\times 1000}{4}\left[1kg=1000g\right] \\ =7\times 250 \\ =1750g \end{gathered}$$

Hence, the weight of $7$ such tiles is $1.75kg$.