Verified answer

[tex]\colorbox{pink} {\green❁Voila:}[/tex]

To find the distance covered by rickshaw, subtract the distances covered by train and bus from the total distance traveled:

[tex]\textrm{\[ \text{Distance covered by rickshaw} = \text{Total distance} - (\text{Distance by train} + \text{Distance by bus}) \]}[/tex]

[tex]\textrm{\[ \text{Distance covered by rickshaw} = 20 \, \text{km} - (5.25 \, \text{km} + 7.5 \, \text{km}) \]}[/tex]

[tex]\textrm{\[ \text{Distance covered by rickshaw} = 20 \, \text{km} - 12.75 \, \text{km} \]}[/tex]

[tex]\textrm{\[ \text{Distance covered by rickshaw} = 7.25 \, \text{km} \]}[/tex]

Therefore, the distance covered by rickshaw is 7.25 km.

Answer: 7.25 km

Step-by-step explanation:

Distance covered by Rickshaw = 20 - (5.25+7.5)

                                                    = 20 - 12.75

                                                    = 7.25 km