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# Nandini's house is 9/10 km from her school. She walked some distance and then took a bus for 1/2 km to reach the school. How far did she walk?

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?

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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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