- 15000
- 15632
- 15421
- 15115

Option 1 : 15000

Let's discuss the concepts related to Interest and Compound Interest. Explore more from Quantitative Aptitude here. Learn now!

**Given**

Amount = Rs.17658

Time = 2 years

**Concept used**

Ci = \(x + y + \frac{{xy}}{{100}}\)

**Calculation**

R_{1} = 8% and R_{2} = 9%

Ci for 2 years

⇒ \(8 + 9 + \frac{{8 × 9}}{{100}}\)

⇒ 17 + 0.72

⇒ 17.72%

Let the principal be 100

Principal + Interest = Amount

100 + 17.72 = 117.72%

Amount

⇒ 17658 / 11772 × 10000

Amount = Rs.15000

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