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Find the simple interest on ₹700 at 9% per month in 7 months.
₹444
₹461
₹441
₹464
₹441
Since the rate is already per month, simply calculate 9% of 700 and multiply by 7: 9×7=63, then 63×7=441.
Principal P = ₹700, Rate of interest R = 9% per month, Time T = 7 months
SI=100P×R×T
Since the rate is already per month, simply calculate 9% of 700 and multiply by 7: 9×7=63, then 63×7=441.
Students often mistake 'per month' for 'per annum' and unnecessarily divide the time by 12, which is incorrect here.
Identify Given Values
Extract the principal amount, rate of interest, and time period from the problem statement.
P=700,R=9%,T=7
Apply Simple Interest Formula
Since the rate is already given per month, the formula is directly applied without time conversion.
SI=100P×R×T=100700×9×7
Calculate Final Result
Perform the multiplication: 7×9×7=63×7=441.
SI=441
C is correct because the simple interest for 7 months at 9% per month on ₹700 is ₹441.
Always check if the interest rate time-unit matches the given period; if it's 'per month' but time is 'years', you must convert the time to months.
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