Question

Twice the sum of two numbers is 72. If one of the numbers is 20, then the other number is __________.
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Answer 1

Answer:

52

Step-by-step explanation:

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Answer 2

Let the 2 numbers be x and y. It is given that one of the numbers is 20, hence, let y=20.

$2(x+y)=72\\= 2(x+20)=72\\= 2x+40 = 72\\= 2x=72-40\\=2x=32\\x=32/2\\x=16$