Question
The simple interest and the true discount on a certain sum for a given time and at a given rate are Rs. 85 and Rs. 80 respectively. The sum is:
Answer: Option C
$$\eqalign{
& {\text{Sum}} = \frac{{S.I.\, \times\, T.D.}}{{ {S.I.} - {T.D.} }} \cr
& = \frac{{85 \times 80}}{{ {85 - 80} }} \cr
& = Rs.\,1360 \cr} $$
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$$\eqalign{
& {\text{Sum}} = \frac{{S.I.\, \times\, T.D.}}{{ {S.I.} - {T.D.} }} \cr
& = \frac{{85 \times 80}}{{ {85 - 80} }} \cr
& = Rs.\,1360 \cr} $$
Was this answer helpful ?
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