What will be the total amount after 3 years if Tk. 1200 is invested at a simple interest rate of 5% annually?
A
Tk. 1380
B
Tk. 1320
C
Tk. 1430
D
Tk. 1560
উত্তরের বিবরণ
Question: What will be the total amount after 3 years if Tk.
1200 is invested at a simple interest rate of 5% annually?
Solution:
Here,
Principal, P = Tk. 1200
Rate of Interest, r = 5% = 5/100
Time, n = 3 years
We know,
Simple Interest, I = P × n × r
I = 1200 × 3 × (5/100)
I = 1200 × 3 × 5/100
I = 3600 × 5/100
I = 180 Tk.
Now, the Amount after 3 years, A = P + I
A = 1200 + 180
A = 1380 Tk.
∴ The amount after 3 years will be Tk. 1380.
0
Updated: 8 hours ago
In how many years will Tk. 750 amount to Tk. 900 at 4% simple interest per annum?
Created: 8 hours ago
A
3.5 years
B
3 years
C
4.5 years
D
5 years
Question: In how many years will Tk. 750 amount to Tk. 900
at 4% simple interest per annum?
Solution:
Simple Interest = Amount - Principal
= 900 - 750
= 150
Here,
Principal, P = 750
Interest Rate, R = 4%
SI = 150
Time, T = ?
SI = PRT/100
⇒ T = (SI × 100)/(P × R)
= (150 × 100)/(750 × 4)
= 15000/3000
= 5 years
0
Updated: 8 hours ago
What is the compound amount of Tk. 3200 for 2 years at a rate of interest 5% per annum?
Created: 8 hours ago
A
Tk. 3500
B
Tk. 3528
C
Tk. 3640
D
Tk. 3568
Question: What is the compound amount of Tk. 3200 for 2
years at a rate of interest 5% per annum?
Solution:
Given,
Principal, P = 3200
Rate, r = 5% = 5/100 = 1/20
Time, n = 2 years
We know,
A = P(1 + r)n
= 3200 × (1 + 1/20)2
= 3200 × (21/20)2
= (3200 × 21 × 21) / (20 × 20)
= (3200 × 441) / 400
= 1411200 / 400
= 3528
∴ The compound amount is Tk. 3528.
0
Updated: 8 hours ago
A certain principal amount, invested at simple interest, grows to Tk. 815 after 3 years and Tk. 854 after 4 years. What is the original principal amount?
Created: 8 hours ago
A
Tk. 658
B
Tk. 612
C
Tk. 698
D
Tk. 710
Question: A certain principal amount, invested at simple
interest, grows to Tk. 815 after 3 years and Tk. 854 after 4 years. What is the
original principal amount?
Solution:
Given,
Amount after 3 years = Tk. 815
Amount after 4 years = Tk. 854
∴
Interest for 1 year = 854 - 815 = Tk. 39
∴
Interest for 3 years = 39 × 3 = Tk.
117
∴
Principal = 815 - 117 = Tk. 698
0
Updated: 8 hours ago
