Q. 19 A4.4( 121 Votes )

A trust fund has

Answer :

(a) Let Rs x be invested in the first bond.

Then, the sum of money invested in the second bond will be Rs. (30000 – x).


It is given that the first bond pays 5% interest per year, and the second bond pays 7% interest per year.


Thus, in order to obtain an annual total interest of Rs. 1800, we get:




5x + 210000 -7x = 180000


210000 -2x = 180000


2x = 210000 – 180000


2x = 30000


x = 15000


Therefore, in order to obtain an annual total interest of Rs. 1800, the trust fund should invest Rs. 15000 in the first bond and the remaining Rs. 15000 in the second bond.


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