If doubling a number and adding 20 to the result gives the same answer as multiplying the number by 8 and taking away 4 from the product, the number is	Select:
A) 2 B) 3 C) 4 D) 6 E) 7
Solution   Let the number be x.	= Then, 2x+20 = 8x–4   = 6x = 24   ‹=›x = 4.   Answer 4
<result>C</result>
If doubling a number and adding 20 to the result gives the same answer as multiplying the number by 8 and taking away 4 from the product, the number is