7. Nandini’s house is \frac{9}{10}\; km from her school. She walked some distance and then took a bus for  \frac{1}{2}\; km  to reach the school. How far did she walk?

Answers (1)

The distance Nandini walked is given by :- 

       \frac{9}{10}\ -\ \frac{1}{2}\ =\ \frac{9\times 2\ -\ 1\times 10 }{20}\ =\ \frac{8}{20}\ =\ \frac{2}{5}

Hence she walked \frac{2}{5}\ Km.

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