Banker's Discount Practice Test 1

Question : 7 of 40

Marks: +1, -0

The difference between the SI and TD on a certain sum of money at 6% for 3 months is Rs 9. Find the sum.

Solution:

SI={x×6×3}/{100×12}=3/200x

TD=(x×6×3/12)/{100+(6×3/12)}=3/203x

SI-TD=3/200x-3/203x

9=3x(1/200-1/203)

x = Rs 40,600

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