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Calculate the simple interest if the principal amount is ₹75,000, the rate is 5%, and the time is 5 years. 7032
₹3,750
₹16,870
₹7,850
₹18,750
₹18,750
Calculate 5% of 75,000 mentally as 3,750 (which is 1/20 of 75,000), then multiply by 5 years to get 18,750.
Principal (P) = ₹75,000, Rate of Interest (R) = 5% per annum, Time (T) = 5 years.
SI=100P×R×T
Calculate 5% of 75,000 mentally as 3,750 (which is 1/20 of 75,000), then multiply by 5 years to get 18,750.
Students often calculate the Total Amount (Principal + Interest) instead of just the Simple Interest, leading to a confusion of options.
Identify given variables
List the variables from the problem: Principal P=75,000, Rate R=5%, and Time T=5 years.
P=75,000,R=5,T=5
Apply Simple Interest formula
Substitute the given values into the standard Simple Interest formula SI=100P×R×T.
SI=10075,000×5×5
Calculate the result
Simplify the expression by canceling the zeros and multiplying the constants: 750×25=18,750.
SI=750×25=18,750
D is correct because the calculated Simple Interest for the given principal, rate, and time is ₹18,750.
This concept is foundational for Compound Interest problems; remember that for CI, you would calculate interest on the cumulative balance each year rather than a fixed principal.
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