Question
A certain amount doubles itself when invested at r% p.a.
simple interest for 10 years. Find the value of r.Solution
Let the principal be Rs. x According to the question, (x × r × 10)/100 = 2x – x Or, r = 10
According to a certain code
* means 'greater than'
+ means 'less than'
÷ means 'equal to'
% means 'plus'
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