খুলনা বিশ্ববিদ্যালয়

সালঃ 2017

C ইউনিট

1. One copy machine can make 20 copies a minute , and a second copy machine makes 15 copies a minute. If the two copiers work together, how long would it take them to make 2100 copies?

60 minutes

105 minutes

122 minutes

140 minutes

2. current age ratio of father and son is 7:2 After 5 years, their age ratio will be 8:3 what is the corrent age of father?

20

25

30

35

3. The measure of the side of a square is tripled. If x represents the perimeter of the original square , what is the value of the new perimeter?

3x

4x

9x

12x

4. what is the circumference radius of a triangle whose sides are 7,24 and 25 respectively?

11.0

12.5

15.0

17.0

5. If Mr. Rahim receives BDT 1500 as a profit from an investment which was made 5 years ago. If the rate was 6% per annum. then what was the amount of investment?

3,000

4,000

5,000

6,000

6. The length ofa rectangle is 4 times its width. The rectangle is covered with 216 pieces of blocks each having an area of 1.5 sq. com. What is the length of the rectangle?

27

36

45

54

7. The Value Added Tax of retail sales is 5% If a customer pays BDT 150 VAT. then what is the value of his / her total shopping bill ?

1,500

1,800

3,000

4,500

8. A box in the university bookstore contains books and each book in the box is a History book. an English book or a and one -sixth are English books, what fraction of the books are Science books?

1/3

2/3

1/2

3/4

9. `If 32 students in a class are female and in the class, the ratio of female students to male students is 16:9 , what percentage of the class is female?

`33%

64%

36%

72%

10. One copy machine can make 20 copies a minute, and a second copy machine makes 15 copies a minute. If the two copies work together, how long would it take them to make 2100 copies?

60 minutes

105 minutes

122 minutes

140 minutes

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