The expenses of organizing a garden party increased from Rs.9000 to Rs.12000 when the number of registered candidates increased from 25 to 40. Find the total cost of organizing the party if there are 50 final registrations.	Choose the correct choice from the following options:  A) Rs.11000  B) Rs.12000  C) Rs.13000  D) Rs.14000  E) None
We know that the expenses of party increases not directly proportional but directly relational.   Assume the fixed component of expense is K rupees and Variable component is M rupees.   Then the total cost is given by   K + 25 x M = 9000 ............(1)   When there are 40 registrations the total cost is   K + 40 x M = 12000 .........(2)   By substracting (1) from (2)   ⇒15M=3000⇒M=200⇒15M=3000⇒M=200   So the variable cost per head is Rs.200   To find the fixed cost we can substitute Rs.200 in either (1) or (2), then K = 4000   If there are 50 registrations then the total cost = 4000 + 50 x 200 = Rs.14000   Answer Rs.14000
<result>D</result>
The expenses of organizing a garden party increased from Rs.9000 to Rs.12000 when the number of registered candidates increased from 25 to 40. Find the total cost of organizing the party if there are 50 final registrations.