What is the simple interest on BDT 15,000 at 8% per annum for 5 months?
A
Tk. 450
B
Tk. 500
C
Tk. 525
D
Tk. 600
উত্তরের বিবরণ
Question: Find the simple interest on BDT 15,000 at 8% per
annum for 5 months.
Solution:
Principal, P = 15,000 Taka
Time, n = 5 months = 5/12 years
Rate of interest, r = 8% = 8/100
Simple Interest, I = P × n × r
= 15,000 × (5/12) × (8/100)
= (15,000 × 5 × 8)/(12 × 100)
= 600,000/1200
= 500
∴ The simple interest is Tk. 500.
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 mixture contains copper, zinc, and tin in the ratio 2 : 3 : 5. If the total weight of the mixture is 50 grams, how many grams of tin are there in the mixture?
Created: 8 hours ago
A
20 grams
B
15 grams
C
10 grams
D
25 grams
Question: A mixture contains copper, zinc, and tin in the
ratio 2 : 3 : 5. If the total weight of the mixture is 50 grams, how many grams
of tin are there in the mixture?
Solution:
Given,
Copper : Zinc : Tin = 2 : 3 : 5
Total parts = 2 + 3 + 5 = 10
Weight of tin = (5/10) × 50 = 25 grams
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
