Question

find ratio of 5m to 20km

Answer 1

5 m : 20 km
20 km = 20000 m
∴5 m : 20000 m
  1 : 4000

Answer 2

The ratio of 5 m to 20 km is 1 : 4000

Given :

The quantities 5 m and 20 km

To find :

The ratio

Concept :

Ratio : Ratio means comparing of two quantities

The ratio of a number a to another number b ( where b ≠ 0) is a fraction a/b and it is written a : b , the first term a is called antecedent and the second term is called consequent

Solution :

Step 1 of 3 :

Write down the given quantities

The quantities are 5 m and 20 km

Step 2 of 3 :

Express them with same unit

The given quantities are of different unit

We express them with same unit

20 km = 20000 m

Step 3 of 3 :

Find the ratio

Hence the required ratio

= 5 : 20000

$\displaystyle \sf{ = \frac{5}{20000} }$

$\displaystyle \sf{ = \frac{1}{4000} }$

$\displaystyle \sf{ = 1 : 4000}$

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