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1
From the following equation state which two variables are directly proportional .
2
18 men can do a piece of work in 35 days. For doing the same work in 15 days, how many men are required?
36
32
42
46
3
Inverse variation can be written as
4
If y varies inversely as , and y = 6 when , write an equation describing this inverse variation.
5
If 5 men can do a piece of work in 30 days, in how many days can 15 men do the same amount of work?
10
90
6
12
Which of the quantities vary inversely with each other?
Distance travelled and cab fare.
Area of a land and its cost.
Number of workers and amount of work done.
Number of workers and time taken to finish a job.
7
10 men can do a piece of work in 24 days. In how many days can 15 men finish the same work ?
16
24
8
Which of the quantities does not vary directly with each other?
9
From the following equation state which variables are directly proportional and find the proportionality constant k.
x,y, 3.5
x,z 35
x,z, 3.5
y,z, 3.5
From the following equation state which two variables are directly proportion and determine the proportionality constant K.
,
, k = 1/3
, k = 1/4
11
Suppose that y varies inversely as x 2 and that y = 10 when . Find the equation connecting x and y.
Suppose that y varies inversely as x 2 and that y = 10 when x = .
Find the value of y when x = 3.
13
A and B can do a piece of work in 10 days, B and C in 15 days,C and A in 20 days. How many days will be taken by A,B,and C working together to finish the work?
14
6 men can complete the electric fitting in a building in 7 days. How many days are required if 21 men do the job?
1 day
3 days
2 days
2.5 days
15
The distance a body falls from rest varies directly as the square of the time it falls (ignoring air resistance). If a ball falls 144 feet in three seconds, how far will the ball fall in seven seconds?
784
780
447
233
If p varies directly as the square of q, and p = 20 when q = 5, find p when q = 8.
180
100
260
188
17
Suppose y is inversely proportional to the square of the x , and that y =36 when x = 5. Given , find x when y = 49 .
0.78
688
30
18
Suppose y is inversely proportional to the square of the x , and that y =36 when x = 5 ? Find y when x = 15
44
19
A and B can do a piece of work in 12 days; B and C in 15 days; C and A in 20 days much time will A alone take to finish the work?
20 days
30 days
15 days
45 days
20
If 9 girl can prepare 135 garlands in 3 hours, how many girls are needed to prepare 270 garlands in 1 hour?
54
27
35