A shopkeeper marks his goods 40% above the cost price and offers a discount of 20% on the marked price. What is his gain percent?
A
12%
B
17%
C
9%
D
15%
উত্তরের বিবরণ
Question: A shopkeeper marks his goods 40% above the cost price and offers a discount of 20% on the marked price. What is his gain percent?
Solution:
Let,
the cost price (CP) be Tk. 100
Marked Price = 40% more than cost price
= 100 + 40
= 140 Tk.
Discount = 20% of 140
= (20/100) × 140
= 28 Tk.
Selling Price (SP)= 140 - 28 = 112 Tk.
∴ Profit = SP - CP = 112 - 100 = 12 Tk.
∴ Gain percent = 12%
0
Updated: 1 day ago
What is the simple interest on BDT 15,000 at 8% per annum for 5 months?
Created: 1 month ago
A
Tk. 450
B
Tk. 500
C
Tk. 525
D
Tk. 600
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: 1 month ago
What is the difference between simple and compound interest at 10% per annum on a sum of Tk. 6000 at the end of 2 years?
Created: 1 day ago
A
Tk. 120
B
Tk. 90
C
Tk. 60
D
Tk. 75
Question: What is the difference between simple and compound interest at 10% per annum on a sum of Tk. 6000 at the end of 2 years?
Solution:
Principal (P) = Tk. 6000
Rate (r) = 10% per annum
Time (n) = 2 years
Simple Interest (SI):
SI = (P × R × T)/100
= (6000 × 10 × 2)/100
= 120000/100
= Tk. 1200
Compound Interest (CI):
Amount (A) = P × (1 + r/100)n
= 6000 × (1 + 10/100)2
= 6000 × (1.1)2
= 6000 × 1.21
= Tk. 7260
∴ CI = A - P = 7260 - 6000
= Tk. 1260
∴ Difference between CI and SI = 1260 - 1200
= Tk. 60
0
Updated: 1 day ago
৬০ জন ছাত্রের মধ্যে ৪২ জন ফেল করলে পাসের হার কত?
Created: 2 months ago
A
২৫%
B
২৮%
C
৩০%
D
৩২%
প্রশ্ন: ৬০ জন ছাত্রের মধ্যে ৪২ জন ফেল করলে পাসের হার কত?
সমাধান:
পাশ করে = (৬০ - ৪২) জন = ১৮ জন
৬০ জন ছাত্রের মধ্যে পাশ করে = ১৮ জন
১ জন ছাত্রের মধ্যে পাশ করে = ১৮/৬০ জন
∴ ১০০ জন ছাত্রের মধ্যে পাশ করে = (১৮ × ১০০)/৬০ জন
= ৩০ জন
0
Updated: 2 months ago
