If Manoj purchases 324 toffees for ₹ 486, then how many toffees should he sell for ₹ 90 to earn 50% profit?
Cost Price of 324 toffees = Rs.486
Cost Price of 1 toffee = Rs$$\dfrac{486}{324} = Rs.1.5$$
Profit = 50%
Selling price of 1 toffee = 150% of Rs.1.5 = Rs.2.25
Then, Selling Price of 90 toffees $$= 90\times2.25 = 40$$ toffees
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