Inverse Proportion

Q. $\text{If}x\text{and}y\text{vary inversely, then find}$
$x_2\text{and}{y}_3.$

x	25	$x_2$	$\frac{55}{2}$
y	60	55	$y_3$

[2 marks]

Q.

What is inverse proportion?

1. Cannot be used where commodities are used.

2. As one amount changes, another amount remains the same.

3. As one amount increases, another amount increases at the same rate.

4. As one amount decreases, another amount increases at the same rate

Q.

39 men can build a bridge in 12 days, working 5 hours a day. In how many days will 30 men, working 6 hours a day, complete the work?

1. 10

2. 13

3. 14

4. 15

Q. If you read 60 pages each day, how long will it take you to read a 720-page book?

1. 10 Days
2. 20 Days
3. 12 Days
4. 25 Days

Q. The provisions available in the godown can feed 800 children for 60 days. If 400 more children arrive, how long will the stock last?

1. 30 days
2. 40 days
3. 10 days
4. 20 days

Q.

38 + 83 = 83 + 38 is an example of:

1. Closure property

2. Commutative property

3. Associative property

4. Distributive property

Q. The relation
$\frac{A}{B}=constant$
implies indirect proportion.

1. True
2. False

Q. Make the proper pair.

1. Directly proportional
2. Inversely proportional
3. x= 48
4. x= 10

Q. Value of $\frac{A}{B}$ = a constant, when A and B are inversely proportional.

1. False
2. True

Q. If $x\text{and}y$ are inversly related, then, find $l,m\text{and}n$.

$x$	8	4	$l$	16
$y$	8	$m$	32	$n$

1. $m=4l=2n=16$
2. $m=4l=32n=16$
3. $m=16l=2n=4$
4. $m=2l=16n=4$