Bangladesh Bank Officer Exam: Comprehensive MCQ Solutions 2001
01. A trade where selling an item was asking for such a price that would enable him to offer a 10% discount and still make a profit of 20%. If the cost of the product was tk 50, what was his asking price?
Solution:
If the cost price was 50tk then @20% profit selling price is = 50 + 50*20/100 = 60tk
@ 10% discount
If the selling price is 90 then asking price is 100
If the selling price is 1 then asking price is 100/90
If the selling price is 60 then asking price is (100*60)/90 = 66.67 Ans.
02. Mr. X pays 10% tax on all income over 60000tk but he does not pay any tax on interest on postal saving certificate. In 2000 he paid 7500 as tax & he earned 12000 as interest on postal savings account. What is his net income in 2000?
Solution:
Mr. X gives 10% taxes upon his income, so,
If tax is 10tk then income is 100tk
If tax is 7500tk the income is (100*7500)/10 = 75000tk
His total income in 2000 = 75000 + 60000 + 12000 = 147000tk
So, his net income in 2000 is = 147000 – 7500 = 139500tk Ans.
03. A candidate answered all 22q in a test & received 63.5 marks. If the total marks were derived by adding 3.5 marks each correct answer and deducting 1 mark for each incorrect answer, how many q did the student answer correctly?
Solution:
Let, no. of correct answer = x, so incorrect answer = 22 - x
3.5x - 1*(22 - x) = 63.5
Or, 3.5x – 22 + x = 63.5
Or, 4.5x = 63.5 + 22 = 85.5
Or, x = 85.5/4.5 = 19
So, correct answer was 19 Ans.
04. In an organization 30% of all employees live over 10miles away from the place of work & 60% of worker who live who live over 10miles use company transport. If 40% of employees of the company use company transport, what percent of the employees live 10miles or less from work and use company transport?
Solution:
Let total employees = 100, employees live over 10 miles = 30
So, employees live in 10 mile or less = 100 – 30 = 70
Total 40% or 40 employees use transport
Now, employees live over 10miles using transport = 60% of 30 = (60*30)/100 = 18
So, employees live in 10miles or less using transport = 40 – 18 = 22
Here, total 70 employee live in 10miles or less and among them 22 use company transport
So, percentage of using transport of employee who live in 10miles or less = (22*100)/70 = 31*3/7% Ans.