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:

• A. $Rs.1800$
• B. $Rs.1450$
• C. $Rs.1360$
• D. $Rs.6800$

Answer 1

The correct option is C $Rs.1360$

$Sum=\frac{S.I.\times T.D.}{(S.I.)-(T.D.)}=\frac{85\times 80}{(85-80)}=Rs.1360$.