Ship

Question:

The ship was sailing. The tide was rising at the rate of 16 inches per hour. Four rungs were already below the water. Each rung was V/2 inches thick and there was a gap of eight inches between rungs.
After five and one half hours later how many rungs of the ladder would have been submerged?

.

.

C

A

P

T

A

I

N

I

N

T

E

R

V

I

E

W

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Answer: We must bear in mind that both pans are geometrically similar bodies. Since the bigger pan is eight times more capacious, all its linear measurements must be two times greater, and it must be twice bigger in height and breadth.
The surface must be 2 x 2 = 4 times greater, because the surface of similar bodies are to one another as the squares of their linear measurements.
Since the wall sides of the pens are of the same thickness, the weight of the pen would depend on the size of its surface. Therefore the answer is — The bigger pan is four times heavier.

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