If the simple interest on a sum of money for 2 years at 5% per annum is Rs 50

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If the simple interest on a sum of money for 2 years at 5% per annum is Rs. 50, what is the compound interest on the same at the same rate and for the same time? A. Rs. 51.25 B. Rs. 52 C. Rs. 54.25 D. Rs. 60 View Answer Workspace Report Discuss in Forum

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A. Rs. 51.25

B. Rs. 52

C. Rs. 54.25

D. Rs. 60

E. None of these

Solution(By Examveda Team)

$$\eqalign{ & {\text{Sum}} = Rs.\,\left( {\frac{{50 \times 100}}{{2 \times 5}}} \right) \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\, = Rs.\,500 \cr & {\text{Amount}} = Rs.\,\left[ {500 \times {{\left( {1 + \frac{5}{{100}}} \right)}^2}} \right] \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = Rs.\,\left( {500 \times \frac{{21}}{{20}} \times \frac{{21}}{{20}}} \right) \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = Rs.\,551.25 \cr & \therefore {\text{C}}{\text{.I}}{\text{.}} = Rs.\,\left( {551.25 - 500} \right) \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = Rs.\,51.25 \cr} $$

If the simple interest on a sum of money for 2 years at 5% per annum is Rs. 50, what is the compound interest on the same sum at the same rate and for the same time?

  1. Rs. 51.25
  2. Rs. 52
  3. Rs. 54.25
  4. Rs. 60

Answer (Detailed Solution Below)

Option 1 : Rs. 51.25

Free

15 Questions 15 Marks 13 Mins

Given:

Time = 2 years

Rate of interest = 5%

S.I. = Rs. 50

Calculation:

S.I. = PRT/100

⇒ 50 = P × 5 × 2/100

⇒ 5 = P/100

⇒ P = 500

A = P[1 + (r/100)]t

⇒ A = 500[1 + (5/100)]2

⇒ A = 500 × (21/20) × (21/20)

⇒ A = 551.25

C.I. for 2 years = 551.25 - 500 = Rs. 51.25

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If the simple interest on a sum of money for 2 yr at 5% per annum is Rs. 50, what is the compound interest on the same at the same rate and for the same time?

  1. Rs. 51.25
  2. Rs. 52
  3. Rs. 54.25
  4. Rs. 60

Answer (Detailed Solution Below)

Option 1 : Rs. 51.25

Free

CT 1: International and National Awards

10 Questions 10 Marks 8 Mins

Given :

S.I on money for 2 year at 5% = Rs. 50

Formula used :

S.I. = P × R × T / 100 

Amount (A) = P(1 + R/100)n

C.I = A - P

Where,

P = principal, R= Rate, T= Time

Calculation : 

We know that

S.I. = P × R × T / 100 

50 = P × 5 × 2 /100 

⇒ P = 500

Again, in compound interest, the amount

 A = 500(1 + 5/100)2 

 A = 500 (1 + .05)2

A = Rs. 551.25 

Hence, compound interest

C.I = 551.25 - 500 = Rs. 51.25

∴ Compound Interest = Rs. 51.25

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Is the simple interest on a sum of money for 2 years at 5% per annum is rupees 50 What is the compound interest on the same at the same rate and for the same time?

Hence, Compound interest will be 51.25 Rs.

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