Question

The weight of $72books$is $9kg.$ How many such books would weigh $6kg$ ?

Answer 1

“With the increase in number of books, total weight of books will increase, it means two quantities are in direct proportion. For finding the value of unit quantity, division method is applied.”

Number of books in $9kg$ = $72books$

Number of books in $1kg$ = $\frac{72}{9}$

Number of books in $6kg$ = $\frac{72}{9}\times 6$

= $8\times 6$

= $48books$

Hence, $48books$ will have weight of $6kg$ .