Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

Compound Interest

Question:

The compounded interest on a sum of Rs. 20,000 at 20% p.a. for 2 years 3 months. When the interest is compounded 9 mothly, is?

Options:

10412.5

10417.5

10418.5

10410.5

Correct Answer:

10417.5

Explanation:

Interest rate when compounded 9 monthly

                   = \(\frac{9}{12}\) × 20% = 15%

2 year 3 months = 27 months (creates 3 cycle)

Compound interest for 3 cycle of 9 months at the rate of 15%

             15% → \(\frac{3}{20}\)

                             20           23

                             20           23

                             20           23

                        ---------      --------

                          8000         12167

                       Principal       Amount

                           ↓                  ↓

                          ⇒      4167   ⇐ 

C.I. = \(\frac{4167}{8000}\) × 20000 = 10417.5