A genuine discount on Rs. 1680 for the same duration and at the same rate is the same as a banker's discount on Rs. 1600 at 15% per year. The current time is:
A. 3 months
B. 4 months
C. 6 months
D. 8 months
Answer:D
A genuine discount on Rs. 1680 for the same duration and at the same rate is the same as a banker's discount on Rs. 1600 at 15% per year. The current time is:
A. 3 months B. 4 months C. 6 months D. 8 months
Explanation: S.I. on 1600 rupees Equals T.D. on 1680 rupeesRs. 1600 is the P.W. of Rs. 1680, i.e., Rs. 80 is a 15% interest rate on Rs. 1600.Time = 100 × 80 years/1600 x 15 months = 1/3 year=4 months.