- Rs. 3540
- Rs. 3350
- Rs. 3430
- Rs. 3500

Option 3 : Rs. 3430

Given:

The principal is Rs. 39200 and the rate of interest is 7%.

Time = 15 months = 15/12 = 5/4 years

Concept used:

Interest = (principal × interest rate × time)/100

Calculations:

According to the question

Interest = [39200 × 7 × (5/4)]/100

⇒ Rs. 3430

∴ The simple interest is Rs. 3430

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