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Answers (1)

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The statement is actually SP = (900+900)/(45/2) = 1800 x (2/45) = 80
Lets look at the solution :
Let the number of toffees = 900 ( I hope you have understood that part)
Given : cost of 1st kind of tofee is 25 toffees for 1 dollar
So cost of 1 toffee of 1st kind = 1/25 dollars
Therefore cost of 900 such toffees = 900/25 = $ 36
Similarly the cost of 900 toffees of 2nd kind = 900/20 m= $ 45
Total cost = 36 + 45 = $81
SP = $80
loss % = (81-80)/81 x 100