SarkariPYQ

SSC Selection Post 2022 PYQ — Question 68

SSC Selection Post - Matriculation Level - 3 Feb 2022 - Shift 2 • Quantitative Aptitude • Q68

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A sum of Rs. 8,600 amounts to Rs.9,589 in 2122 {{1} \over 2} years at x% p.a. simple interest. What will be the amount of the same sum in 4154{{1} \over 5}  years at (x + 0.4)% p.a.?

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Correct answer: C

Explanation

The correct answer is option 3 i.e. Rs.10,406.

SI = 9589 - 8600 

⇒ SI = 989

Also, SI = PRT/100

⇒ 989 = 8600 × x/100 × 5/2

⇒ x = 4.6%
New rate = 4.6 + 0.4 = 5%

Now, SI = 8600 × 21/5 × 5/100

⇒ SI = 1806

Amount = 8600 + 1806 

⇒ Amount = 10406