Q. 75.0( 2 Votes )

# Given below (Fig.

Answer :

(i) Total numbers of students obtaining less than 20 marks = 27+ 12

= 39

The cost of one work book = Rs 5

Therefore, cash of 39 workbooks = 39 × 5

= Rs.195

(ii) The number of students belonging to the highest mark group = 17

The cost of a prize = 10

Therefore, cost of 17 prize

= 10 × 17

= Rs170

(iii) The number of students belonging to the lowest mark group = 27

The number of problems solved by 15 students = 5

Therefore, the total number of problems solved by 27 students = 5 × 27

= 135

(iv) (a)The total number of students = 100

The number of students in range 40-49, = 17

% of students marks ranging 40-49 = × 100

= 17%

So, the given statement is true.

(b) The number of students in range 10-29 = 32

% of students marks ranging 10-29 = × 100

= 32%

So the given statement is false.

(v) No, of students getting less than 20 marks = 39

(vi) Total number of students getting more than 29 marks = 41

(vii) Number of students getting marks between 9 and 40 = 12 + 20 + 24

= 56

(viii) The number of students belonging to the highest mark group = 17

(ix) The number of students obtaining more than 19 marks = 100 - 27 - 12

= 61

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