1.

The Difference Between Simple And Compound Interest (compounded-annually) On A Sum Of Money For 2 Years At 10% Per Annum Is Rs 65. The Sum Is?

Answer»

LET the sum be Rs x.

Then [x × (1 +10/100)2 - x] – (x × 10/100 × 2) = 65 

=> (x × 11/10 × 11/10 - x) – x/5 = 65 

=> (121x/100 - x) – x/5 = 65 

=> (21x/100 – x/5) = 65 

=> (21x – 20X) = 6500 

=> X = 6500.

Let the sum be Rs x.

Then [x × (1 +10/100)2 - x] – (x × 10/100 × 2) = 65 

=> (x × 11/10 × 11/10 - x) – x/5 = 65 

=> (121x/100 - x) – x/5 = 65 

=> (21x/100 – x/5) = 65 

=> (21x – 20x) = 6500 

=> X = 6500.


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