Banker's Discount Practice Test 2

Question : 18 of 40

Marks: +1, -0

The banker's gain on a certain sum due

1 1/2

years hence is 3 25 of the banker's discount. Find the rate per cent.

Solution:

Let banker's discount = Rs. x; then B.G. = Rs.

{3x}/25

T.D. =x-{3x}/25=22/25x

Now, sum

={x×22/25x}/{x-22/25x}=22/3x

Since, S.I. on Rs.

22/3x

for

1 1/2

years is Rs. x
Hence, rate

={x×100}/{22/3x×3/2}

=100/11=9 1/11%

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