By 20% decrease in the price of rice, people can buy 10 kg more rice in Rs.100. What is the original price of 1kg of rice?

Rs 1.5 Rs 2.5 Rs 5 Rs 4

Rs 2.5

Price = Rs 20 (20% of Rs. 100) Extra rice = 10kg  Thus, decreased price per kg = \(\frac{20 }{10 }\) = Rs 2 Value of decreased price - 80% Value of original price - 100% Therefore, original price per kg = \(\frac{2 }{80 }\) x 100 = Rs. 2.5