Test:
Percentages II - Challenging
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Question 1:
The girl ate three apples out of four. What is percentage of eaten apples?
A
40
%
B
30
%
C
75
%
D
70
%
Question 2:
The length of the rectangular plot is
200
m
e
t
e
r
s
and the width is
20
%
of the length. 25% of this plot was ploughed. How many hectares was not ploughed?
A
0.06
h
a
B
6
h
a
C
60
h
a
D
0.6
h
a
Question 3:
Find sum of
15
%
of
15
and
34
%
of
16
A
9.67
B
76.9
C
769
D
7.69
Question 4:
Find
12
%
of a sum of
1.6
+
5.1
A
840
B
8.4
C
0.84
D
84
Question 5:
The side of one square is
6
c
m
and is
15
%
of the side of another square. Find the perimeter of the larger square.
A
160
c
m
B
60
c
m
C
100
c
m
D
16
c
m
Question 6:
As a result of the machine's improvement, the cutting speed increased from
24
m
/
min
to
27
m
/
min
. How much did productivity increase?
A
25
%
B
12.5
%
C
1.25
%
D
125
%
Question 7:
One of the adjacent angles is
25
%
of the other. Find these angles
A
155
0
,
25
0
B
140
0
,
30
0
C
144
0
,
36
0
D
100
0
,
80
0
Question 8:
A cubic shaped tank with a
1
m
edge is filled with water by 67%. Find a volume of water in the tank.
A
6.7
m
3
B
1
m
3
C
67
m
3
D
0.67
m
3
Question 9:
From milk it is possible to get
6.3
%
of Parmigiano cheese. How much milk do you need to get
8
k
g
of cheese?
A
12.6
k
g
B
126
k
g
C
100
k
g
D
126
62
63
k
g
Question 10:
Find
27
%
of
6
1
4
×
8
+
3
2
3
:
(
-
5.5
)
A
132.3
B
1323
C
13.23
D
-
13.23
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