Question

- 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?
10 cm​

Answer 1

the length of the ship is 28 m, how long is the model ship? Answer: Given that in a model of a ship, the mast is 9 cm high, while the mast of the actual ship is 12 m, i.e., 1200 cm high. Hence, if the length of the ship is 28 m, then the length of the model ship is 21 cm.

Answer 2

correct Question :-

In a model 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?

to find :-

how m how long is the model ship ?

solution:-

Let the length of model ship = x

we have table for this ,

$\begin{tabular}{I clc I cl clclcl}</p><p>\cline{1-3} length of actual ship (in m) & 12& 28\\</p><p>\cline{1-3} length of model ship (in cm)& 9&x \\</p><p>\cline{1-3} </p><p>\end{tabular}$

$\small\underline\textsf{\huge{[}\small{Note:- this is an direct proportion\huge{ ]}}}$

$\large\implies\tt \frac{12}{9} = \frac{28}{x}$

$\large\implies\tt x + 12$

$\large\implies\tt28 \times 9$

$\large\implies\tt x = \dfrac{\cancel{28 \times 9}}{\cancel{12}}$

$\large\implies\boxed{\tt 21 cm}$

the model ship is 21 cm long.