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  Choices
A) 2
B) 3
C) 4
D) 5
E) 6
Sol.   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