If the true discount on s sum due 2 years hence at 14% per annum be Rs. 168, the sum due is ?

P.W. = $\frac{100\times T.D}{R\times T}$ = $\frac{100\times 168}{14\times 2}$ = 600.
Sum = (P.W. + T.D.) = Rs. (600 + 168) = Rs. 768.