The ratio of two numbers is 2:3 and the sum of their cubes is 945. The difference of number is?  Select the correct option.
A) 3
B) 4
C) 5
D) 6
E) 7
2x 3x   8x cube + 27x cube = 945   35x cube = 945   x cube = 27 =&gt; x = 3   3nswer: 3
<result>A</result>
The ratio of two numbers is 2:3 and the sum of their cubes is 945. The difference of number is?