Q- A sum of money was borrowed at 6% per annum simple interest At the end of first year - Maths - Comparing Quantities

Question

Q- A sum of money was borrowed at 6% per annum simple interest
At the end of first year Rupees 6880 was paid off and the rate of
interest on the balance was reduced to 5% per annum If the interest
for the second year was 11/20 of the interest for the first year
what was the original sum borrowed?
(a) Rupees 10000
(b) Rupees 12000
(c) Rupees 17000
(d) Rupees 15000
Q- A sum of money at simple interest amounts to Rupees 9440 in 3
years If the rate of interest is increased by 25% by the same sum
amounts to Rupees 9800 in the same time The original rate of
interest is
(a) 10% p a
(b) 8% p a
(c) 7 5% p a
(d) 6% p a
Q- Ramesh borrowed Rupees 7000 from a bank on simple interest He
returned Rupees 3000 to the bank at the end of 3 years and Rupees
5450 at the end of 5 years and closed the account Find the rate of
interest p a
(a) 4%
(b) 5%
(c) 6%
(d) 8%

priyanka saggu · Accepted Answer

Ans 3 Principal amount = Rs 7000Amount of money he returned after
three years = Rs 3000Amount of money he returned after five years =
Rs 5450Total amount of money returned by him = Rs (3000 + 5450) =
Rs 8450Simple Interest = Rs (8450 - 7000) = Rs 1450
Simple Interest = P×r×t100 1450 = 7000
×r×8100 r = 1450 ×1007000 ×8 r = 14556= 4
14% = 4% (approx)