Ex 12.1, 7 Find the ratio of the following: (a) 30 minutes to 1.5 hours Here, We convert hours into minutes 1.5 hours = 1.5 × 60 minutes = 15/10 × 60 = 15 × 6 = 90 minutes So, Ratio = (30 𝑚𝑖𝑛𝑢𝑡𝑒𝑠)/(90 𝑚𝑖𝑛𝑢𝑡𝑒𝑠) = 30/90 Cancelling 0s = 3/9 = 1/3 ∴ Required ratio = 1 : 3

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Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.

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