Question

The weight of $56$ books is $8kg.$ What is the weight of $154$ such books $?$ How many such books weight $5kg?$

Answer 1

The number of books in $8kg=56$ books

So, the number of books in $1kg=\frac{56}{8}$

$=7$ books.

Thus, the weight of $154$ such books $=\frac{154}{7}$

$=22kg$

Hence, the weight of$154$ such books is$22kg$.

Also,

The number of books in $5kg=5\times 7$

$=35$

Hence, the number of books in $5kg$ is $35$ books.