A reduction of 20% in the price of sugar enables a housewife

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A reduction of 20% in the price of sugar enables a housewife to purchase 6 kg more for Rs. 240. What is the original price per kg of sugar ?

1. Rs. 10 per kg
2. Rs. 8 per kg
3. Rs. 6 per kg
4. Rs. 5 per kg

Correct Option: A

Reduction in price = 20% ( 1 / 5 )
Increase in amount = 25 % (1 / 4) = 6 kg

It means original amount of sugar needed = 6 X 4 =24 kg
∴ Original price of the sugar = 240 / 24
= Rs. 10 per kg