Page 56 - Concepts of Reasoning-8

Worksheet-11.2

Inverse Proportion

1. Choose the values for x and y among the given numbers to form inverse proportion :

x 2

y 2

2. If x and y vary inversely, find the value of x , x , y , y and y and match the following :
2
1
2
1
3
x 6 1 12 x 50 60 x 2
4
1
y y y 4 y 5 10
1 2 3
a. x i. 6
1
b. x ii. 48
2
c. y iii. 25
1
d. y iv. 75
2
e. y v. 30
3
3. Solve the following word problems :

a. A farmer has enough bird feed to feed 300 hens for 20 days. If he buys 200 more hens, how long
would the same amount of feed last?

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b. Four pipes can fill a tank in 80 minutes. How much time will it take for 16 pipes to fill the tank?

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c. 10 people can paint a fence in 3 hours. How long will it take for 6 people to paint it?

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d. At the rate of 27 lines per page, a book contains 300 pages. If the book has to contain 405 pages,
how many lines should a page contain?
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56 Reasoning - 8