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nishant

· started a discussion

· 1 Months ago

wrong data used. (Question: 129334.3 )

percentage obtained by d in subject s is 68 and not 88. hence answer will be 474.9, which results in option e.

Question:

DIRECTIONS: Study the following table carefully to answer these questions:


Percentage of marks obtained by six students in six different subjects

Student

Subject

P

(70)

Q

(80)

R

(120)

S

(125)

T

(75)

U

(150)

A

68

84

77

72

64

82

B

49

79

62

85

56

76

C

56

81

68

60

58

68

D

75

85

82

68

72

78

E

70

66

65

76

77

83

F

72

70

79

68

68

71

What are the marks obtained by D in all the subjects together?

Options:
A)

449.8

B)

499.9

C)

480

D)

490

E)

None of these

Solution:
Ans: (e) Marks obtained by D in all subject together
\(=\cfrac{1}{100}(75\times 70+85\times 80+82\times 120+68\times 125+72\times75+78\times 150) \)
\(=\cfrac{1}{100}(5250+6800+9840+8500 +5400+11700) \)
\(=\cfrac{47490}{100}=474.90\)

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