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Each hour, the temperature rose by 1 and 1/2 degrees. What was the change in temperature in 1 and 1/2 hours?

A. 1 1/4. B. 2 3/4
C. 2 1/4. D. 3

Respuesta :

Divide both numbers by 2 to get 3/4 degrees per 30 mins.

Now, multiply both numbers by 3 to get 9/4 degrees per 90 mins.

Simplify: 2 1/4 per 1 1/2 hours.

The answer is C.

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