The temperature was 32° at dawn. By noon, the temperature had risen 15°. By midnight, the temperature had fallen again by 57°. What was the temperature at midnight?

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Answer 1 · 2016-04-07T09:48:13

The Temperature at midnight was $-10°$

Given:

Temp at Dawn $(x)=32$
Temp at Noon $(y)=15$
Temp at Midnight $(z)=-57$

Getting this into an equation for noon:

$x+y$

$32+15$

$x+y=47°$

Now, $x+y+z$

$47+(-57)$

$47-57$

$-10°$

The Temperature at midnight was $-10°$