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  • Directions for question : About eighty metres inside from Gate No 4 of the Jadavpur University Campus was the iconic ‘Milan Da’s Canteen’, the olde

Directions for question :

About eighty metres inside from Gate No 4 of the Jadavpur University Campus was the iconic ‘Milan Da’s Canteen’, the oldest out of the eight canteens in the campus, catering to students, researchers, faculties, staff and even ex-students of the university for decades since the 60’s, especially for the engineering and art departments. Milan Da, the owner, was quite an innovative chef, and churned out tasty, innovative delicacies with equally innovative names, so popular and iconic, that even NRI ex-students on a visit to Kolkata would line up to savour them.

Milan Da’s wife, the ‘Boudi’ (sister-in-law in Bengali) to all – young or old, student or faculty – handled the cash and had a memory and calculation prowess which was extraordinary. She could exactly remember who ordered what at what time of the day and how much dues were carried forward for each customer.

One month of a particular year she decided to check out which of the snack items of the canteen were being preferred more, and hence started to keep a note of what all the customers – students, faculties and staff of the engineering and arts department – were ordering during snack times. After one month of continuous watch, she come to the following conclusions :

a) Three of the snack items were the clear best-sellers :

  • Chicken stuffed bread pakora named ‘Dhoper Chop’ or ‘a chop of lies’,  
  • Very spicy vegetable chops named ‘Bom’ or ‘a bomb’, and
  • Chick-pea curry with shredded boiled egg and sprinkled with puffed rice named ‘Ghorar Dim’ or ‘the egg of a horse’. 

b) The number of customers preferring all the three snack items was the same as that preferring none of the three

c) The number of residents preferring any two of the three was the same as those preferring any other two, which in turn was the same as those preferring none of the three

d) The number of customers preferring only the ‘Dhoper Chop’ was the same as those preferring only the ‘Ghorar Dim’, and each were twice the number of customers preferring only the ‘Bom’

e) Half the number of customers who preferred the ‘Bom’ preferred at least one of either the ‘Dhoper Chop’ or the ‘Ghorar Dim’.

Question : 

What percentage of the customers preferred to have ‘Dhoper Chop’ or ‘Ghorar Dim’, but not a ‘Bom’ ?

Option: 1

65


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

The percentage of customers who preferred to have ‘Dhoper Chop’ or ‘Ghorar Dim’, but not a ‘Bom’ is represented by the shaded part of the Venn Diagram as shown below :

Hence, the percentage of the customers who preferred to have ‘Dhoper Chop’ or ‘Ghorar Dim’, but not a ‘Bom’ 

= (30% + 5% + 30%) = 65%

Posted by

Pankaj Sanodiya

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