Brandon swims several times a week in a lake near his house. This past summer, the average water temperature was 18 °C, which is 10% cooler than it was last summer. What was last summer's average water temperature?

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Respuesta :

18 x 1.1 =19.8 c

Adding 10% is equal to multiplying by 1.1

Answer:

18 x 1.1 =19.8 c

Step-by-step explanation: