A cubical block of metal weighs 6 pounds How much will another cube of the same metal weigh if its s...........

Quantitative Aptitude ( CCS) Ratio, Proportion

A cubical block of metal weighs 6 pounds. How much will another cube of the same metal weigh if its sides are twice as long?

If you double the sides of a cube,

the ratio of the surface areas of the old and new cubes will be 1: 4.

The ratio of the volumes of the old and new cubes will be 1: 8.

Weight is proportional to volume.

So, If the first weighs 6 pounds,

the second weighs 6x8 pounds =48.

Hence, option 4 is the correct answer.

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