Management Aptitude Test Sep 2011 Paper

Question : 85 of 200

Marks: +1, -0

The true discount on a certain sum of money due 2

2/3

yr, hence is ₹ 150 and the simple interest on the same sum for the same time and at the same rate is ₹ 200. Interest rate per annum is

Solution:

(3) Given, TD = ₹ 150, SI = ₹ 200, t = 2

2/3

yr =

8/3

yr
∴ Using the formula,
SI - TD =

{TD×r×t}/100

, we get
⇒ 50 =

{150×r×8}/{300×3}

⇒ r =

100/8=12 1/2

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