20. The true discount on a certain sum of money due 3 years hence is Rs.250 and the simple interest on the same sum for the time and at the same rate is Rs.375. Find the sum ?
A. Rs. 500 B. Rs.750
C. Rs. 1000 D. Rs. 1250
Answer:B
T.D = Rs.250
S.I = Rs.375
Sum due = S.I×T.D/(S.I)-(T.D)
= Rs.(375×250/375-250 )
= Rs.750.
