RRB Group D Model Paper 10 with solutions

Question : 69 of 100

Marks: +1, -0

A and B borrowed ₹ 3000 and ₹ 3200 respectively at the same rate of interest for 2

1/2

years. If B paid ₹ 40 more interest than A, find the rate of interest.

Solution:

(3) Let the rate of interest be r%.
Then difference in interest is,

{3200×5×r}/{100×2}

{3000×5×r}/{100×2}

= 40
80r - 75r = 40 ⇒ r =

40/5

= 8%

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