In a model of a ship, the mast is 9 cm high, while the mast of the actual ship is 12 m high. If the length of the ship is 28 m, how long is the model ship?
Let the length of the mast of the model ship be x cm.
The given information in the form of a table is as follows:
|-||Height of mast||Length of ship|
|Model ship||9 cm||x|
|Actual ship||12 m||28 m|
We know that the dimensions of the actual ship and the model ship are directly proportional to each other.
Therefore, we obtain:
`12/9 = 28/x`
`x = (28xx9)/12 = 21`
Thus, the length of the model ship is 21 cm.
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