Half a number plus 5 is 15.What is the number?  Choose the correct answer:
A) 8
B) 20
C) 10
D) 11
E) 12
Let x be the number. Always replace "is" with an equal sign   (1/2)x + 5 = 15   (1/2)x = 15 - 5   (1/2)x = 10   x = 20   correct answer is 20
<result>B</result>
Half a number plus 5 is 15.What is the number?