7. The true discount on Rs. 1760 due after a certain time at 12% per annum is Rs. 160. The time after which it is due is:
A. 4
B. 6
C. 8
D. 10
Answer: D.
Explanation:
P.W. = Rs. (1760 - 160) = Rs. 1600
∴ S.I. on Rs.1600 at 12% is Rs. 160.
∴ Time = [100 * 160 / 1600 * 12] = 5/6 years = [5/6 * 12] months = 10 months.
