Question 4 - Examples - Chapter 2 Class 7 Fractions and Decimals

Last updated at April 16, 2024 by

Example 4 - Suman studies for 5 2/3 hours daily She devotes 2 4/5 hour

Example 4 - Chapter 2 Class 7 Fractions and Decimals - Part 2
Example 4 - Chapter 2 Class 7 Fractions and Decimals - Part 3

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Question 4 Suman studies for 5 2/3 hours daily. She devotes 4 2/5 hours of her time for Science and Mathematics. How much time does she devote for other subject?Total study time = 5 2/3 hours Time for Science & Maths = 2 4/5 hours Now, Time for other subjects = 5 2/3 − 2 4/5 = (5+2/3) − (2+4/5) = 5 + 2/3 − 2 − 4/5 = (5 − 2) + (2/3 −4/5) = 3 + ((2 × 5 − 4 × 3)/(3 × 5)) = 3 + ((10 − 12)/15) = 3 + ((−2)/15) = 3 − 2/15 = (3 × 15 − 2)/15 = (45 − 2)/15 = 43/15 Since Numerator > denominator Converting to mixed fraction = 2 13/15 hours ∴ Time for other subjects = 2 𝟏𝟑/𝟏𝟓 hours

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo