50+ Aptitude Banker's Discount Problems with Solutions Pdf - 1

Ans: B

Sum = $${B.D × T.D.} / {B.D. – T.D.}$$

       = Rs. $$({72 × 60} / {72 – 60})$$

       = Rs.$$({72 x 60} / {12})$$

       = Rs. 360.

Ans: C

P.W. = Rs. (720 – 80) = Rs. 640.

S.I. on Rs. 640 = Rs. 80

S.I. on Rs. 720 = $$({80 / 640} × 720)$$ = Rs. 90.

∴ B.D. = Rs. 90.

Ans: C

P.W. = Rs. (540 – 90) = Rs. 450.

∴ S.I. on Rs. 450 = Rs. 90.

∴ S.I. of Rs. 540 = Rs. $$({90 / 450} × 540)$$ =Rs. 108.

∴ B.D. = Rs. 108.

Ans: D

S.I. on Rs.2400 = T.D. on Rs. 2520

∴ Rs. 2400 is the P.W. of Rs. 2520

i.e. Rs. 120 is S.I. on Rs. 2400 at 12%

∴ Time = $${100 × 120} / {2400 × 12}$$ = $${5} / {12}$$years = 5 months.

Ans: A

Let T.D. be Rs. 1. Then, B.D. = Rs. $${11}/{10}$$ = Rs. 1.10.

∴ Sum = Rs. $$({1.10 × 1} / {1.10 – 1})$$ = Rs. $$({110} / {10})$$ = Rs.11.

∴ S.I. on Rs. 11 for 2 years is Rs. 1.10.

∴ Rate = $$({100 × 1.10} /{11 × 2})%$$ = 5%.