Respuesta :

The answer to the problem is Twenty
tropicaia
Answer: 10

Explanation:
the sum = addition problem
twice a number = 2x
and = +
half the number = ÷ 2 
(2x) ÷ 2 = 10
(2x) ÷ 2 • 2 = 10  • 2 
2x = 20
2x ÷ 2 = 20 ÷ 2
x = 10

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