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Electrical Engineering

Kannan sells laddu at Rs.30 per kg. A laddu is made up of flour and sugar in the ratio of 5:3. The ratio of price of sugar and flour is 7:3 (per kg). Thus, he earns 67% profit. What is the cost price of sugar?

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Kannan sells laddu at Rs.30 per kg. A laddu is made up of flour and sugar in the ratio of 5:3. The ratio of price of sugar and flour is 7:3 (per kg). Thus, he earns 67% profit. What is the cost price of sugar?
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Since, the profit is 67, so the selling price will be 167% of the cost price

∴Ratio of selling price to cost price will be 5:3

∴Cost price of laddu =30*3/5 = 18

Let cost of flour and sugar is 3s and 7s respectively

Since laddu is made up of flour and sugar in the ratio of 5:3 = (53s)+(37s)/8=18

15s+21s=144

36s=144

s = 4

∴Price of sugar = 7s = 7 × 4

= Rs. 28
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