RRB NTPC Prelims Model Paper 4 with solutions

Question : 29 of 100

Marks: +1, -0

A principal amount, when invested at a simple interest of 6%, earned a profit of ₹2400 in 2 years. What was the principal amount?

Solution:

(4)Let the principal amount be ₹x.Interest earned after 2 years was,

{x×2×6}/100=2400

⇒x={2400×100}/12

=₹20000

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