MathRevolution wrote:
[GMAT math practice question]
As the figure shows, a ball and cone are inscribed by a cylinder. What is the ratio of the volumes of the sphere to the cone to the cylinder?
Attachment:
8.5 PS.png
\(A. 1:1:2\)
\(B. 1.5:1:3\)
\(C. 1.5:1.5:2\)
\(D. 2:1:3\)
\(E. 3:2:4\)
If you know for a fact that volume of a cone is 1/3rd of the volume of the cylinder then you can just compare ratios.
In case of D, Cylinder is 3/6 which is 1/2.
1/3 of 1/2 is 1/6. Option D satisfies that.
Hence D.
I got it right but I did not approach it correctly.
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