69
Q:

# A certain sum amounts to Rs.7350 in 2 years and to Rs.8575 in 3 years.find the sum and rate percent

 A) 3400 B) 4400 C) 5400 D) 6400

Explanation:

Interest for 1 year is the same whether it's simple interest or the compound interest.

Now interest of third year = 8575 - 7350 = 1225; means principal for this interest is 7350 if comound interest is takenIf 7350 is the principal interest = 1225

if 100 is the principal interest =(1225/7350) * 100 = 50/3 %

When a thing increases for two successive times the overall increase on initial amount = a + b + (a * b)/100

Therefore overall interest for two years = 50/3 + 50/3 + [(50/3)*(50/3)]/100 = 325/9 %

Therefore amount after 2 years = 100 + 325/9 = 1225/9

If 1225/9 is the amount principal =100

if 7350 is the amount principal =(900/1225)*7350 =5400

So sum = 5400; Rate = 50/3 %

Q:

The difference between the compound interest and simple interest on ₹x at 7.5% per annum for 2 years is ₹45. What is the value of x?

 A) 9,000 B) 7,000 C) 10,000 D) 8,000

Explanation:

0 420
Q:

The difference between compound interest and simple interest on ₹ x at 8% per annum for 2 years is ₹ 48. What is the value of x?

 A) 7500 B) 7400 C) 8000 D) 7800

Explanation:

0 547
Q:

The difference between the compound interest and simple interest on Rs. x at 12% per annum for 2 years is ₹43.20. What is the value of x?

 A) 3,000 B) 2,500 C) 2,800 D) 2,400

Explanation:

0 120
Q:

The difference between the compound interest and simple interest on ₹x at 7% per annum for 2 years is ₹24.50. What is the value of x?

 A) 5,000 B) 4,800 C) 6,000 D) 5,400

Explanation:

0 678
Q:

A sum of Rs. 8,000 invested at 10% p.a. amounts to Rs. 9,261 in a certain time, interest compounded half-yearly. What will be the compound interest (in Rs. ) on the same sum for the same time at double the earlier rate of interest, when interest is compounded annually?

 A) Rs. 2,560 B) Rs. 2,480 C) Rs. 2,500 D) Rs. 2,520

Explanation:

3 514
Q:

The compound interest on a certain sum at 16 2/3% p.a. for 3 years is Rs.6,350. What will be the simple interest on the same sum at the same rate for 5 2/3 years?

 A) ₹10,200 B) ₹11,400 C) ₹7,620 D) ₹9,600

Explanation:

2 1913
Q:

A and B together borrowed a sum of Rs.51,750 at an interest rate of 7% p.a. compound interest in such a way that to settle the loan, A paid as much amount after three years as paid by B after 4 years from the day of borrowing. The sum (in Rs) borrowed by B was:

 A) 25,650 B) 26,750 C) 25,000 D) 24,860

Explanation:

1 5645
Q:

A certain amount of money at compound interest grows to Rs.66,550 in 3 years and Rs.73,205 in 4 years. The rate percent per annum is:

 A) 9% B) 5% C) 11% D) 10%