1.

A sum of Rs 22000 is divided into three parts such that the corresponding interests earned after 1 year at 2% per annum, 4 years at 2% per annum and 16 years at 1% per annum simple interest are equal. Find the least of the sum which was lent. (in Rs)

Answer»

1000
2000
5000
4000

Solution :i) Find the interests in each case and equate them.
ii) LET the sum lent be RSX, Rs y and Rs `22,000=(x+y)`.
ii) `(x xx 2)/(100) = (y xx2 xx 4)/100`
`=(200,000-(x+y) xx 1 xx 6)/100`
iv) SOLVE the above equation and find the least of the sums.


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