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Ex 7.2, 3 The population of a city decreased from 25,000 to 24,500. Find the percentage decrease. Initial population = 25,000 Final population = 24,500 Decrease in population = Initial population βˆ’ Final population = 25,000 βˆ’ 24, 500 = 500 Percentage decrease in population = (π·π‘’π‘π‘Ÿπ‘’π‘Žπ‘ π‘’ 𝑖𝑛 π‘π‘œπ‘π‘’π‘™π‘Žπ‘‘π‘–π‘œπ‘›)/(πΌπ‘›π‘–π‘‘π‘–π‘Žπ‘™ π‘π‘œπ‘π‘’π‘™π‘Žπ‘‘π‘–π‘œπ‘›) Γ— 100% = πŸ“πŸŽπŸŽ/(πŸπŸ“,𝟎𝟎𝟎) Γ— 100% = 5/250 Γ— 100% = 5/25 Γ— 10% = 1/5 Γ— 10% = 2%

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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.