2266 . In a class , the ratio of the number of boys to girls is 5 : 3 . What percent of the students of the class are girls ?

A. 37.5%
B. 50%
C. 60%
D. 62.5%

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Answer: Option A

Explanation:

Summation of ratios = 5 + 3 = 8

So, percentage of girls = 3 / 8 x 100% = 37.5%

2267 . In a class 25 students play cricket, 25 students play football and 10 students play both. 10 students play neither cricket nor football . What is the number of students in the class?

A. 40
B. 50
C. 60
D. 65

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Answer: Option B

Explanation:

Number of students=25+25-10+10=50.

2268 . In a class 75% passed in English, 60% in Mathematics and 25% failed in both the subjects. What is the percentage who passed in both subjects?

A. 60%
B. 55%
C. 50%
D. 45%

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Answer: Option A

Explanation:

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A. 4
B. 8
C. 10
D. 16
E. None of these

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Answer: Option D

Explanation:

TR, TP are two tangents drawn to a bigger circle from an external point T. we know that, length of tangents drawn from external point to circle are equal ∴TR = TP ___(i) Similarly TP, TQ are two tangent drawn to a smaller circle from an external point T. Again we have TP = TQ __(ii) From (i) & (ii), we have TR = TQ

2270 . In a class composed of x girls and y boys what part of the class is composed of girls ?

A. y / ( x + y )
B. x / xy
C. x / ( x + y)
D. y / xy
E. None of these

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Answer: Option C

Explanation:

Girls = x

Boys = y

So, Girls + Boys = x + y

Composed of girls = x/(x + y).

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A. y / (x + y)
B. x / xy
C. x / (x + y)
D. y / xy

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Answer: Option C

Explanation:

Girls = x

Boys = y

So, Girls + Boys = x + y

Composed of girls = x/(x + y)

2272 . In a class if 4 student sit in each bench there are 3 empty benched , but 6 students have to stand if 3 studnet sit each bench . How many students are there3 in that class?

A. 50
B. 60
C. 70
D. 80

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Answer: Option B

Explanation:

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A. 54
B. 60
C. 66
D. 84

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Answer: Option C

Explanation:

Number of French speaking students = 60% of 120 = 72

Number of students speaking both French and English = 25% of 72 = 18

Number of students who speaks only English = 120 - 72 = 48

Total number of English speaking students = 48 + 18 = 66

2274 . In a class of 120 students, 70 percent can speak Bengali and the rest can speak only English. If 25 percent of those in the class who can speak English can also speak Bengali, how many of the students in the class can Bengali?

A. 57
B. 60
C. 84
D. 48

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Answer: Option C

Explanation:

Number of Bengali speaking students = 70% of 120 = 70/100×120 = 84

2275 . In a class of 200 students , 40 percent are girls . 25 percent of the boys and 10 percent of the girls signed up for a tour to Cox's bazar . What percent of the class signed up for the tour?

A. 19%
B. 23%
C. 25%
D. 27%
E. 35%

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Answer: Option A

Explanation:

ধরি, total student = x তাহলে x এর 40% girls = .40% এদের মধ্যে 10% অর্থাৎ . 10 ×.40x girls এবং একইভাবে . 25 ×. 60x boys যার tour এ অর্থাৎ percent of the class signed up

= (. 25×.60x + . 10 ×.40x) /x ×100% = 19%

2276 . In a class of 22 students, 21 students get an average of 44 marks. If the remaining students get 66 marks, the average marks of the whole class is--

A. 30
B. 45
C. 15
D. None of these

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Answer: Option B

Explanation:

Total marks of the 21 students = 44 x 21 = 924

So, total marks of the whole class = 924 + 66 = 990

Average marks of the whole class = 990 / 22 = 45.

2277 . In a class of 25 students 44% are boys. What is the ratio of girls in the class?

A. 11 : 14
B. 25 : 14
C. 4 : 1
D. 1 : 4

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Answer: Option A

Explanation:

Boys : Girls = 44 : 56 = 11 : 14

2278 . In a class of 30 students 18 play football, 14 play cricket and 5 do not play any game. How many students play both the game?

A. 5
B. 7
C. 9
D. 11
E. 13

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Answer: Option B

Explanation:

30 - 5 = 25

18 + 14 = 32

32 - 25 = 7

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A. 37
B. 27
C. 23
D. 25

View Answer	Favorite Question

Answer: Option B

Explanation:

Students opted for Math or Science, n(M U S) = 50 - 2 = 48

Students opted for Math, n(M) = 50 - 15 = 35

Students opted for Science, n(S) = 50 - 10 = 40

Students opted for both Math and Science n(M ∩ S) = n(M) + n(S) - n(A U B) = 35 + 40 - 48 = 27

2280 . In a class of 50 students, 18 take music, 26 take art, and 2 take both art and music. How many students in the class are not enrolled in either music or art?

A. 6
B. 8
C. 16
D. 24
E. None of these

View Answer	Favorite Question

Answer: Option B

Explanation:

50 - 18 - 26 + 2 = 8, as 2 take both art and music , we need to add them, as they get subtracted twice while subtracting 18 and 26 from 50.

2266 . In a class , the ratio of the number of boys to girls is 5 : 3 . What percent of the students of the class are girls ?

2267 . In a class 25 students play cricket, 25 students play football and 10 students play both. 10 students play neither cricket nor football . What is the number of students in the class?

2268 . In a class 75% passed in English, 60% in Mathematics and 25% failed in both the subjects. What is the percentage who passed in both subjects?

2269 . In a class average the mark in an exam is 70. The average of students who scored below 60 is 50. The average of students who scored 60 or more is 75. If the total number of students in this class is 20, how many students scored less than 60?

2270 . In a class composed of x girls and y boys what part of the class is composed of girls ?

2271 . In a class composed of x girls and y boys what part of the class is composed of girls?

2272 . In a class if 4 student sit in each bench there are 3 empty benched , but 6 students have to stand if 3 studnet sit each bench . How many students are there3 in that class?

2273 . In a class of 120 students, 60 percent can speak English and the rest can speak only Bengali. If 25 percent of those in the class who can speak English can also speak Bengali, how many of the students in the class can Bengali?

2274 . In a class of 120 students, 70 percent can speak Bengali and the rest can speak only English. If 25 percent of those in the class who can speak English can also speak Bengali, how many of the students in the class can Bengali?

2275 . In a class of 200 students , 40 percent are girls . 25 percent of the boys and 10 percent of the girls signed up for a tour to Cox's bazar . What percent of the class signed up for the tour?

2276 . In a class of 22 students, 21 students get an average of 44 marks. If the remaining students get 66 marks, the average marks of the whole class is--

2277 . In a class of 25 students 44% are boys. What is the ratio of girls in the class?

2278 . In a class of 30 students 18 play football, 14 play cricket and 5 do not play any game. How many students play both the game?

2279 . In a class of 50 students, 10 did not opt for math, 15 did not opt for science and 2 did not opt for either. How many students of the class opted for both math and science?

2280 . In a class of 50 students, 18 take music, 26 take art, and 2 take both art and music. How many students in the class are not enrolled in either music or art?

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