Q1 of 14 Page 95

A report estimates e-waste increasing by 15% every year and the e-waste in 2014 is about 9 crore tons. What is the expected amount of e-waste in 2020?

E-waste in 2014 = 9 crore tons

Initial value = 9 crore to


Rate at which e waste increases every year=15%


It means every year the e waste increases by 15% to its value in that year.


In compound interest, interest charge on the principle and accumulated interest.


This is the same problem as we have solved previously.


E waste in 2020 = 9 crore tons


= 20.8175 crore tons21 crore tons


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