A unit price is a ratio that compares the price of an item to its unit of measurement. To determine which product is the better buy, calculate each one’s unit price. Which of these five boxes of Klean-O Detergent is the best buy?
a) Travel-size: Rs. 100 for 5 Kg.
b) Small: Rs. 200 for 11 KG.
c) Regular: Rs. 400 for 22 Kg.
d) Large: Rs. 700 for 40 Kg.

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