Directions (15): Study the following
table carefully to answer the questions given below it.
Percentage of Marks
Obtained by Various Students in Various Subjects in an Examination
MARKS


Students

English
(out of 100)

Hindi
(out of 100)

Science (out of 150)

History
( out of 60)

Maths
(out of 150)

Geography (out of 40)

A

68

75

82

60

96

55

B

88

73

85

65

88

65

C

75

56

72

75

75

80

D

70

66

80

80

72

62

E

72

60

68

74

68

75

F

85

70

90

70

74

70

1. What is the approximate overall percentage obtained by C in the examination?
a) 78 b)75 c)71 d) 69 e)
65
Answer: C
Explanation :
Marks obtained by C in the exam:
English = 100 x $\frac{75}{100}$
= 100
Hindi = 100 x $\frac{56}{100}$
$\frac{56}{100}$ = 56
Science = 150 x $ \frac{72}{100}$
$\frac{72}{100}$ = 108
History = 60 x $\frac{75}{100}$ = 45
History = 60 x $\frac{75}{100}$ = 45
Maths = 150 x $\frac{75}{100}$ = 112.5
Geography = 40 x $\frac{80}{100}$ = 32
Total marks obtained by C in the exam = 75 + 56 + 108 + 45 + 112.5 + 32 =
428.5
Total maximum marks = 100 + 100+150+60+150+40 = 600
∴ Required percentage = $\frac{428.5}{600}$x 100% = 71.4%
2. What is the difference in the marks obtained by B in English and
Maths together and the marks obtained by F in the same subjects?
a) 15 b) 17 c) 15 d) 28 e)
None of these
Answer : c
Explanation :
Marks obtained by B :
English = 100 x $\frac{88}{100}$ = 88
Maths = 150 x $\frac{88}{100}$= 132
Marks obtained by F:
English = 100 x $\frac{85}{100}$ = 85
Maths = 150 x $\frac{74}{100}$ = 111
Total marks of F in English and Maths = 85 + 111 = 196
Required difference = 220 – 196 = 24
3. The marks obtained by E in
Geography are what per cent of the marks obtained by E in Hindi?
a) 50 b) 55 c) 45 d) 60 e)
None of these
Answer : A
Solution: Marks obtained by E:
Goegraphy = 40 x $\frac{75}{100}$ =
30
Hindi = 100 x $\frac{60}{100}$ = 60
Therefore required percentage = $\frac{30}{60}$ x 100 = 50
4. What is the overall percentage of marks obtained by D in History
and Geography together?
a) 73.4% b) 72.8% c) 70.5 % d) 68.8 % e) None of these
Answer :B
Explanation :
Marks obtained by D:
History = 60 x $\frac{8}{100}$= 48 Geography = 40 x $\frac{62}{100}$ = 24.8
Total marks in History and Geography = 48 + 24.8 = 72.8
Total maximum marks of History and Geography = 60 +40 = 100
∴ The overall percentage of marks obtained by D in
History and Geography together is
= $\frac{72.8}{100}$ x 100% = 72.8%
5. What is the average makes obtained by all the students together
in Science?
a) 77.16 b) 120.50 c) 118 d) 121 e)119.25
Answer: E
Explanation :
Maximum marks in science = 150
Average marks percentage of all student= $\frac{(82 + 85 + 72 + 80
+ 68 + 90)}{6}$ = $\frac{477}{6}$
=79.5
Average marks in science
= 150 x $\frac{79.5}{100}$ = 119.25
Directions (1 to 5): Study the table
carefully to answer these questions:
TABLE SHOEING NUMBER (IN LAKHS) OF INSTRUMENTS
MANUFACTURES BY SIX COMPANIES OVER THE YEARS
Company Year

A

B

C

D

E

F

2002

45

35

48

42

50

49

2003

40

32

52

46

48

45

2004

48

36

50

43

56

48

2005

49

37

45

48

52

44

2006

46

30

55

50

54

50

2007

52

38

47

40

51

52

(Andhra Bank PO 2009)
1. What is the average number of
instruments manufactured by company C for all the given years?
a) 49,00,000 b) 49,50,000 c) 48,50,000 d)
48,00,000 e) None of these
Answer: B
= $\frac{(48 + 52+ 50+45+55+47) lakhs}{6}$
= $\frac{297}{6}$
= 4950000
2. The number of instruments
manufactured by company E in 2004 is approximately
what percent of the total number of
instruments manufactured by all the
companies together in 2004?
a) 23 b) 25 c) 20 d) 16 e)
18
Answer : C
Explanation :
Number of
instruments manufactured by company E in 2004 = 56 lakhs
Number of instruments manufactured by all the companies in 2004
= (48 + 36 + 50 + 43 + 56 + 48) lakhs
= 281 lakhs
\ Required percentage =$\frac{56}{281}$ x 100% = 19.92 = 20% approximately
3. Total number of instruments
manufactured by company A is approximately
what percent of the total number of
instruments manufactured by company F for all the given years together?
a) 97 b) 92 c) 87 d) 90 e)
None of these
Answer : A
Explanation :
Total number of instruments manufactured by company A for all the
given years together Ãž (45 + 40 + 48 + 49
+ 46 + 52) lakhs = 280 lakhs
Total number of instruments manufactured by company F for all the
given years together
Ãž (49 + 45 + 48 + 44 + 50 + 52) lakhs = 288 lakhs
Required percentage = $\frac{280}{288}$ x 100%= 97.22% = 97% approximately
4. The number of instruments
manufactured by company B in 2005 is approximately
what percent of the total number of
instruments manufactured by company B in all the years together?
a) 20 b) 16 c) 14 d) 18 e)
22
Answer : D
Explanation :
Number of instruments manufactured by
company B in 2005 = 37 lakhs
Total number of
instruments manufactured by company B over the years
= (35 + 32 + 36 + 37 + 30 + 38) lakhs = 208 lakhs
\ Required
percentage =$ \frac{37}{208}$
x 100% = 17.78% = 18% approximately
5. What is the ratio between the total number of instrument’s manufactured
by all the companies together in 2007 and that in 2006 respectively?
a)56 : 57 b) 57 : 56 c) 29 : 28 d) 28 : 29 e)
None of these
Answer: A
Explanation:
Total number of instruments manufactures by all the companies
together in the Year 2007
Ãž (52 + 38 + 47 + 40
+ 51 + 52) lakhs = 280 lakhs
Total number of instruments manufactures by all the companies
together in Year Year 2006
Ãž (46 + 30 + 55 + 50 + 54 + 50) lakhs = 285 lakhs
\ Required ratio =
280 : 285 = 56 : 57