NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 2: Fractions and Decimals - Problems and SolutionsQuestion 61
Class 7 - Mathematics - Unit 2: Fractions and Decimals - Problems and Solutions
Question. 61
Reemu read \(\dfrac{1}{5}\)th pages of a book. If she reads further 40 pages, she would have read \(\dfrac{7}{10}\)th pages of the book. How many pages are left to be read?
Answer:
24 pages
Detailed Answer with Explanation:
Let total pages be \(T\). Then \(\dfrac{T}{5}+40=\dfrac{7T}{10}\Rightarrow 40=\dfrac{T}{2}\Rightarrow T=80\). Read = \(\dfrac{7}{10}\times 80=56\). Left = \(80-56=24\).