1.

An honest person invested some amount at the rate of 12% simpleinterestand someotheramount at the rate of 105simple interest. He received yearly interestof₹ 130. But if he had interchanged amount invested,he would have received₹ 4 more as interest .Howmuch amountdid he invest at differentrates. ?(ii)Whichmathematicalconceptis used in this problem.?(iii)Whichvalueis beingemphasized here ?

Answer»


Answer :(i)Thus, person invested ₹ 500 at 12% PER annum and ₹ 700at 10% PERANNUM.
(ii)Pairof linearequation in two variables.
(iii)Honesty isthe BEST policy.


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