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Math 10 Chapter 3 - Part D
1.
If a:b::b:c then c = __________
a) a
2
/b
b) a
2
/b
2
c) b
2
/a
d) b
2
/a
2
2.
If 49, x and 4 are in continued proportion then x will be
a) +- 14
b) +- 7
c) 14
d) 7
3.
The mean proportional of y
3
/x
7
and x/y
3
a) x
3
b) x
3
/y
3
c) 1/x
3
d) y
3
/x
7
4.
If x : y = 3:7 then x/x+y =
a) 3/4
b) 3/10
c) 7/3
d) 3/7
5.
a:b = 7:11 then 2a + b/ 2a | b =
a) 14/11
b) 25/3
c) 3/25
d) 11/14
6.
If a
2
+ b
2
/ a
2
| b
2
= 13/5 then a:b is
a) 3:2
b) 2:3
c) 9:4
d) 4:9
7.
If a/b = 11/4 then a
2
+ b
2
/a
2
| b
2
= _____________
a) 105/137
b) 121/16
c) 16/121
d) 137/105
8.
If a/b = b/c= 3 then a =
a) 9b
b) 9c
c) 3b
d) 3c
9.
If c/d = a/b = 1/2 then a
2
+ c
2
/b
2
+ d
2
=
a) 4
b) 1
c) 1/4
d) 2
10.
The sum of two numbers if 24. The ratio between them is 1:3. One of the number is
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a) None of the above three
b) 18
c) 12
d) 16
11.
If a/b = c/d = 7/3 then c
2
+ d
2
/c
2
-d
2
=
a) 49/9
b) 58/40
c) 58/9
d) 9/49
12.
If 7a + 4b/7a | 4b = 5 then a/b =
a) 1/2
b) 6/7
c) 7/6
d) 7/4
13.
If p
2
= 7/q
3
then
a) p
3
a
q
2
b) q
2
a
1/p
3
c) p
2
a
q
3
d) P
2
a
1/q
3
14.
Current and resistance
a) Direct proportion
b) x = ky
c) Inverse Proporation
d) No relation
15.
y
Ö
a
x
a) x
2
= yz
b) y
2
= kx
c) y
2
= xz
d) x = ky
16.
x:y::y:z
a) x
2
= yz
b) y
2
= kx
c) x = ky
d) y
2
= xz
17.
Work and days
a) x = ky
b) Direct proportion
c) No relation
d) Inverse Proporation
18.
x
2
a
y
a) y
2
= kx
b) y
2
= xz
c) x = ky
d) x
2
= yz
19.
12,a,3 are in continued proportion then a is
a) a = 36c
b) 36
c) 11
d) +- 6
20.
Mean proportional of x-y/x+y, x
2
y
2
/x
2
| y
2
a) a = 36c
b) 11
c) xy/(x+y)
d) 36
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