Find the simple interest, when:
(i) Principal = Rs 2000, Rate of Interest = 5% per annum and Time = 5 years.
(ii) Principal = Rs 500, Rate of Interest = 12.5% per annum and Time = 4 years.
(iii) Principal = Rs 4500, Rate of Interest = 4% per annum and Time = months.
(iv) Principal = Rs 12000, Rate of Interest = 18% per annum and Time = 4 months.
(v) Principal = Rs 1000, Rate of Interest = 10% per annum and Time = 73 days.
(i) Principal (P) = Rs 2000
Rate of interest (R) = 5% p.a.
Time (T) = 5 years
Simple interest =
(ii) Principal (P) = Rs 500
Rate of interest (R) = 12.5% p.a.
Time (T) = 4 years
Simple interest =
(iii) Principal (P) = Rs 4500
Rate of interest (R) = 4% p.a.
Time (T) = 6 months
Simple interest =
(iv) Principal (P) = Rs 12000
Rate of interest (R) = 18% p.a.
Time (T) = 4 months (1 year = 12 months)
Simple interest =
(v) Principal (P) = Rs 1000
Rate of interest (R) = 10% p.a.
Time (T) = 73 days =
Simple interest =
Find the interest on Rs 500 for a period of 4 years at the rate of 8% per annum. Also, find the amount to be paid at the end of the period.
Principal amount (P) = Rs 500
Time period (T) = 4 years
Rate of interest (R) = 8% p.a.
Interest =
Total amount paid = Principal amount + Interest = Rs 500 + 160
= Rs 660
A sum of Rs 400 is lent at the rate of 5% per annum. Find the interest at the end of 2 years.
Principal amount (P) = Rs 400
Time period (T) = 2 years
Rate of interest (R) = 5% p.a.
Interest paid after 2 years=
A sum of Rs 400 is lent for 3 years at the rate of 6% per annum. Find the interest.
Principal amount (P) = Rs 400
Time period (T) = 3 years
Rate of interest (R) = 6% p.a.
Interest after 3 years =
A person deposits Rs 25000 in a firm who pays an interest at the rate of 20% per annum. Calculate the income he gets from it annually.
Principal amount (P) = Rs 25000
Time period (T) = 1 year
Rate of interest (R) = 20% p.a.
Annual interest =
A man borrowed Rs 8000 from a bank at 8% per annum. Find the amount he has to pay after 412412years.
Principal amount (P) = Rs 8000
Time period (T) =
Rate of interest (R) = 8% p.a.
Interest =
Total amount paid after = Principal amount + Interest = Rs 8000 + Rs 2880 = Rs 10880
Rakesh lent out Rs 8000 for 5 years at 15% per annum and borrowed Rs 6000 for 3 years at 12% per annum. How much did he gain or lose?
Principal amount lent out by Rakesh (P) = Rs 8000
Time period (T) = 5 years
Rate of interest (R) = 15% p.a.
Interest =
Principal amount borrowed by Rakesh (P) = Rs 6000
Time period (T) = 3 years
Rate of interest (R) = 12% p.a.
Interest =
Amount gained by Rakesh = Rs 6000 − Rs 2160 = Rs 3840
Anita deposits Rs 1000 in a savings bank account. The bank pays interest at the rate of 5% per annum. What amount can Anita get after one year?
Principal amount (P) = Rs 1000
Time period (T) = 1 year
Rate of interest (R) = 5% p.a.
Interest =
Total amount paid after 1 year = Principal amount + Interest = Rs 1000 + Rs 50 = Rs 1050
Nalini borrowed Rs 550 from her friend at 8% per annum. She returned the amount after 6 months. How much did she pay?
Principal amount (P) = Rs 550
Time period (T) = 6 months = (1 year = 12 months)
Interest =
Total amount paid after 6 months = Principal amount + Interest = Rs 550 + Rs 22 = Rs 572
Rohit borowed Rs 600000 from a bank at 9% per annum for 2 years. He lent this sum of money to Rohan at 10% per annum for 2 years. How much did Rohit earn from this transaction?
Principal amount lent out by Rohit (P) = Rs. 60000
Time period (T) = 2 years
Rate of interest (R) = 10% p.a.
Interest =
Principal amount borrowed by Rohit from the bank (P) = Rs. 60000
Time period (T) = 2 years
Rate of interest (R) = 9% p.a.
Interest =
Amount gained by Rohit = Rs. 12000  10800 = Rs. 1200
Romesh borrowed Rs 2000 at 2% per annum and Rs 1000 at 5% per annum. He cleared his debt after 2 years by giving Rs 2800 and a watch. What is the cost of the watch?
Principal amount borrowed by Romesh (P) = Rs. 2000
Time period (T) = 2 years
Rate of interest (R) = 2% p.a.
Interest =
Principal amount borrowed by Romesh (P) = Rs. 1000
Time period (T) = 2 years
Rate of interest (R) = 5% p.a.
Interest =
Total amount that he will have to return = Rs. 2000 + 1000 + 80 + 100 = Rs. 3180
Amount repaid = Rs. 2800
Value of the watch = Rs. 3180  2800 = Rs. 380
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