(17)3.5 x (17)? = 178 Choices:
A) 2.29	B) 2.75	C) 4.25	D) 4.5	E) None of these
Solution   let (17)3.5 * (17)x = 178. then, (17)3.5 + x = (17)8.   ∴ 3.5 + x = 8 ⇔ x = (8 - 3.5)= 
<gadget id="calculator">(8 - 3.5)</gadget>
<output>4.5</output>
4.5   Answer 4.5
<result>D</result>
(17)3.5 x (17)? = 178