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					 X, Y and Z had have dinner together. The cost of the meal of Z was 20% more then that of Y and the cost of the meal of X was 5/6 as much as the cost of the meal of Z. If Y paid ₹ 100, then what was the total amount that all the three of them had paid?
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                        - ₹ 285
- ₹ 300
- ₹ 335
- None of these
 
Correct Option: D
Given  that, 
 The cost of meal  of Y = ₹ 100
 Now, according to the question,
  The cost of the meal of Z = 20% more than that of Y
  The cost of the meal of Z = (100 + 100 x 20 %) = (100 + 100 x 20/100 ) = (100 + 20) = ₹ 120
 and the cost of the meal of  X  = 5/6 as much as the cost of the meal of Z = 5/6 x 120 = ₹  100
 ∴ Total amount that all the three has to be paid = 100 + 120 + 100 
Total amount that all the three has to be paid  = ₹  320
 
	