If 0.6:1.4 :: 2:4:x, then x=?
Select:
A) 56
B) 5.6
C) 0.56
D) 0.056
E) None of these
Explanation:   0.6 × x = 2.4 × 1.4   x = (2.4 × 1.4)/0.6 = 24/10 × 17/10 × 1/(6/10)   24/10 × 14/10 × 10/6   2/5 × 14 = 28/5= 
<gadget id="calculator">28/5</gadget>
<output>28/5 = around 5.6</output>
5.6   Answer: Option 5.6
<result>B</result>
If 0.6:1.4 :: 2:4:x, then x=?