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Example 10 - Do the ratios 15 cm to 2 m and 10 sec to 3 minutes form

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Example 10 Do the ratios 15 cm to 2 m and 10 sec to 3 minutes form a proportion?2m = 2 Γ— 100 cm = 200 cm 3 min = 3 Γ— 60 sec = 180 sec 15 cm : 2 m = (15 π‘π‘š)/(2 π‘š) = (15 π‘π‘š)/(200 π‘π‘š) = 15/200 = 3/40 = 3 : 40 10 sec : 3 min = (10 π‘π‘š)/(3 π‘šπ‘–π‘›) = (10 𝑠𝑐)/(180 𝑠𝑒𝑐) = 10/180 = 1/18 = 1 : 18 ∴ 15 cm : 2 m β‰  10 sec : 3 min Thus, Given ratios are not in proportion

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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 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.