Question

If the weight of 81 books is 9 kg, then 1. The weight of 36 such books is _____ kg.

Answer 1

Answer:

Step-by-step explanation:

9/81 = 0.1111

weight of one book = 0.111

weight of 36 such books = 36 x 0.111

                                          = 3.996

                                           = 4kg (approx)

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Answer 2

• As per the data given in the question, we have to find the value of the expression.

           Given data:- Weight of $81$ books is $9\ kg.$

           To find:- Weight of $36$ books $=?kg.$

            Solution:-

        $\text { Weight of } 81 \text { books }=9 \mathrm{~kg}\\\text { Weight of } 1 \text { book }=\frac{9}{81} \\=\frac{1}{9} \mathrm{~kg}\\\text { Therefore, weight of } 36 \text { books }\\=\frac{1}{9} \times 36=4 \mathrm{~kg.}$

       Hence we will get the weight of $36$ books is $4\ kg.$