For a party 240 guests were invited.Contracted have gained 12.5% profit but 30 guest were absent.He charged same cost , lost 100 rs. what is the meal cost?
Select:	A) 20/3	B) 80/3	C) 10/3	D) 40/3	E) 50/3
Let Cost of one meal be x.   Hence, C.P. of 240 meals = 240 x.   Since contractor gains 12.5 % profit therefore   total selling price = 240x + 240*12.5/100 x   = 270x.   Now 30 guest were absent.   Therefore C.P will remain same 240  + 240*12.5/100= 
<gadget id="calculator">240  + 240*12.5/100</gadget>
<output>270</output>
270x.   Now 30 guest were absent.   Therefore C.P will remain same= 240x   And new S.P for 210 guest = (270/240 ) *   210 x   In this case he incurrs a loss of Rs 100.   240x - (9/8) x * 210 = 100   x=80/3.   So, cost of one meal is Rs. 80/3.   ANSWER:80/3
<result>B</result>
For a party 240 guests were invited.Contracted have gained 12.5% profit but 30 guest were absent.He charged same cost , lost 100 rs. what is the meal cost?