Given:
· A number is increased by 20% and then decreased by 20%, repeated twice.
Formula Used:
1. The net effect of increasing and then decreasing by 20% is calculated as: Net Percentage Change = (1− (Change Percentage)2/100)2−1
Solution:
1. Apply formula for each cycle: = −7.84%
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150 Mins English English20 Questions20 Marks20 Mins English English150 Questions150 Marks150 Mins EnglishIf the price of rice increases by 20% and a person reduces its consumption by 20%, by what percentage will his total expenditure on rice decrease?
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