CASE STUDY
Bal Bharti Vidyalaya is located in Karauli district of Rajasthan. The school decided to go for
plantation drive on the occasion of VANMAHOTSAVA. It was decided that the number of
trees, that each section of each class will plant, will be the same as the class in which they
are studying, e.g., a section of Class I will plant 1 tree, a section of Class II will plant 2 trees
and so on, till Class X. There are five sections of each class. Ms. Anshu Sharma, Principal of
the Vidyalaya asked forest department to provide plants for Vanmahotsava.
(A) How many plants were needed for plantation by all sections of class IV?
(i) 20
(ii) 25
(iii) 30
(iv) 35
(B) How many plants were needed for plantation by all sections of Primary classes (1st to 5th)?
(i) 65
(ii) 75
(iii) 25
(iv) 35
(C) How many plants were needed for plantation by all sections of class 7?
(i) 30
(ii) 35
(iii) 40

(iv) 45
(D) How many plants were needed for plantation by the whole school?
(i) 300
(ii) 275
(iii) 250
(iv) 200
(E) How many plants were needed for plantation by classes 6th to 8th?
(i) 105
(ii) 100
(iii) 80
(iv) 120