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Mathematics
8th
grade
Inverse Proportion | Direct and Inverse Proportions | Assessment | English | Grade 8
6 questions
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- 1. Multiple Choice
In which of the following case, x and y are said to be in inverse proportion?
x/y = 5
xy = 5
x = 5 x y
5 x x = y
- 2. Multiple Choice
Both a and b vary inversely proportional to each other. When a is 0.05, b is 1.25. What will be the value of b when a is 2.4?
0.026
1.25
1.36
0.045
- 3. Multiple Choice
Which of the following are not in inverse proportion?
The time required to reach at a place and speed of the vehicle.
The population of a place and the area of land per person in that place.
Length of a rectangle and its area when breadth is constant.
The number of workers on a job and the time to complete the job.
- 4. Multiple Choice
If x and y are in inverse proportion, then find the values of m and n.
m = 864, n = 48
m = 27, n = 48
m = 108, n = 27
m = 27, n = 108
- 5. Multiple Choice
45 workers are employed to reap a field in 27 days. How many days will be required if 10 more workers join them before the start of the work?
243 ¹⁄₁₁
22 ¹⁄₁₁
22 ¹⁄₂
121 ¹⁄₂
- 6. Multiple Choice
Mina takes a square paper and folds it to make 8 equal parts. She finds that the area of each part is 20 cm². She then takes another square paper of similar dimensions but now she folds the paper to form 16 equal parts. The area of each part in this case will be ______.
6.4 cm²
10 cm²
40 cm²
2560 cm²
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