Question

a bus covers a distance of 300 km in 5 hours and then come covers 450 kilometre in 8 hours calculate its average speed​

Answer 1

I have explained everything in the picture.

Answer 2

$\large{\red{\mathfrak{\underline{Your~Answer:}}}}$

✿ Total Distance = 300 + 450 = 750Km

✿ Total Time = 5 + 8 = 13Hr

$\large{\boxed{\mathtt{Average \: Speed = \frac{Total \: Distance}{Total \: Time}}}}$

$\rightarrow \large{\mathtt{\: Average~Speed= \frac{750}{13}}}$

$\mathtt{\large{\blue{\rightarrow ~Average~Speed=\: 57.69 km/hr}}}$