### খুলনা বিশ্ববিদ্যালয়

#### C ইউনিট

60 minutes

105 minutes

122 minutes

140 minutes

20

25

30

35

3x

4x

9x

12x

11.0

12.5

15.0

17.0

3,000

4,000

5,000

6,000

27

36

45

54

1,500

1,800

3,000

4,500

1/3

2/3

1/2

3/4

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

RightAns: 0 | WrongAns: 0 | Result: 0/0