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Sunny's Cafe bought seven and a half liters of cooking oil and Sammy's Diner bought five and a half liters.
If Sunny's Cafe had to pay $10 more than Sammy's Diner, find the price of one liter of cooking oil.
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According to the condition, the difference
7.5 liters - 5.5 lites = 2 liters of oil
costs $10.
Hence, 1 liter price is $5.