NCERT Solutions for Class 7th Maths Chapter 2 Fractions and Decimals Exercise 2.3 Q 3
http://www.youtube.com/watch?v=Y10KQwjdWHANCERT Solutions for maths in Video http://www.youtube.com/user/cbsepapers/videos
CBSE sample papers https://www.cbsesamplepapers.info/
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