Banker's Discount Practice Test 1

Question : 38 of 40

Marks: +1, -0

The simple interest and true discount on a certain sum for a given time and at a given rate are Rs. 85 and Rs. 80 respectively; find the sum.

Solution:

Required sum

={S.I.×T.D.}/{S.I.-T.D.}

={85×80}/{85-80}

=\Rs. 1360

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