Q. 14.5( 11 Votes )

A person in vests

Answer :

Given:


Amount invested: ₹10000 and ₹15000


Interest after 1 year: ₹ 900 for first amount and ₹1200 for second amount.


i). To check whether interest proportional to the investments.


Interest ratio


Investment ratio


If Interest ratio is equal to investment ratio, then only both are in proportion.


As we can observe from above solution, interest ratio is not equal to investment ratio.


i.e.


ii). Ratio of interest to investment


In first case, amount invested is ₹10000 and interest earned is ₹900


Ratio


Now,


In second case, amount invested is ₹15000 and interest earned is ₹1200


Ratio


iii). Annual rate of the scheme


Rate


In first scheme, rate



Annual rate in this scheme is 9% per annum.


In second scheme, rate




2 × 4 = 8%


Annual rate in this scheme is 8% per annum.


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