Karen Morrison and Nick Hamshaw Solutions for Exercise 4: Exercise 21.4

Write the  $1 cm to 2m$ as a ratio in the form of (i) $1:n$ (ii) $n:1$

Write the  $2cm to 5m$ as a ratio in the form of (i) $1:n$ (ii) $n:1$

Write the  $4 cm to 1 km$ as a ratio in the form of (i) $1:n$ (ii) $n:1$

Write the  $5 cm to 10 km$ as a ratio in the form of (i) $1:n$ (ii) $n:1$

Write the  $3.5 cm to 1 m$ as a ratio in the form of (i) $1:n$ (ii) $n:1$

Write the  $9 mm to 150 km$ as a ratio in the form of (i) $1:n$ (ii) $n:1$

A map has a scale  of $1:50000$. How long would each of these real lengths be on the map ?

$120 km$

A map has a scale  of $1:50000$. How long would each of these real lengths be on the map ?

$75.5 km$