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CBSE
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MCQ Questions for CBSE Class 12 with Answers
MCQ Questions for CBSE Class 11 with Answers
MCQ Questions for CBSE Class 10 with Answers
MCQ Questions for CBSE Class 9 with Answers
MCQ Questions for CBSE Class 8 with Answers
MCQ Questions for CBSE Class 7 with Answers
MCQ Questions for CBSE Class 6 with Answers
MCQ Questions for CBSE Class 5 with Answers
MCQ Questions for CBSE Class 4 with Answers
MCQ Questions for CBSE Class 3 with Answers
MCQ Questions for CBSE Class 2 with Answers
MCQ Questions for CBSE Class 1 with Answers
Quiz
CBSE
/
Class 8
/
Maths
/
Direct and Inverse Proportions
1.
If 8 men can do a piece of work in 20 days, in how many days could 20 men do the same work?
6 days
8 days
4 days
10 days.
2.
If an amount of food last for 40 days for 120 men, how long will it last for 80 men at the same rate?
50 days
60 days
80 days
100 days.
3.
If 18 women can reap a field in 7 days, in what time can 6 women reap the same field?
15 days
21 days
30 days
36 days.
4.
10 men can dig a trench in 15 days. How long will 3 men take?
50 days
60 days
100 days
75 days.
5.
3 lambs finish eating turnips in 8 days. In how many days will 2 lambs finish them?
6
8
10
12.
6.
6 pipes are required to fill a tank in 1 hour. How long will it take if only 5 pipes of the same type are used?
75 minutes
72 minutes
80 minutes
90 minutes.
7.
40 cows can graze a field in 16 days. How many cows will graze the same field in 10 days?
60
64
80
75.
8.
If x = ky and when y = 4, x = 8 then k =
1
2
3
4.
9.
x and y vary inversely with each other. If x - 15 when y = 6, then the value of x when y = 15 is
2
4
5
6.
10.
If 12 workers can build a wall in 50 hours, how many workers will be required to do the same work in 40 hours?
10
13
14
15
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