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

Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class


Transcript

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

Ask a doubt
Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.