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Ex 2.1, 8 - Michael finished colouring a picture in 7/12 hour. Vaibhav

Ex 2.1, 8 - Chapter 2 Class 7 Fractions and Decimals - Part 2
Ex 2.1, 8 - Chapter 2 Class 7 Fractions and Decimals - Part 3

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Ex 2.1, 8 Michael finished coloring a picture in 7/12 hour . Vaibhav finished coloring the same picture in 3/4 hour. Who worked longer? By what fraction was it longer? Michael finished work in = 7/12 hour Vaibhav finished work in = 7/4 hour We need to find who worked longer. i.e. we need to find greater of 7/12 & 3/4 To find which number is greater or smaller, We make their denominators equal. Common denominator = LCM of 4 & 12 = 2 × 2 × 3 = 4 × 3 = 12 So, 7/12 3/4 = Thus, 9/12 > 7/12 ∴ Vaibhav worked longer We also need to find by how much Difference in hours = 3/4 − 7/12 = 9/12 − 7/12 = ((9 − 7))/12 = 2/12 = 1/6 Vaibhav worked longer, by 𝟏/𝟔 hours

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.