Question

In 8 minutes, Rajan jogs 800 metres. What is his speed in km/h?​

Answer 1

➙$\large\mathfrak \pink{Solution:-}$

$\underline \mathbb{GIVEN:-}$

Distance = 800 metres.

Time = 8 minutes.

$\underline \mathbb{TO \: FIND:-}$

Speed in km/h.

$\underline \mathbb{FORMULA:-}$

Distance = Speed × Time.

1 km = 1000 metres.

1 hour = 60 minutes .

$\underline \mathbb{BY \: THE \: PROBLEM:-}$

$Distance = Speed × Time \\ \\ \implies \: 800 = Speed \times 8\\ \\ \implies \:Speed = \frac{800 \times 60}{8 \times 1000} - - (converting \: into \: km / hr) \\ \\ \implies \:Speed = 6 \: km/ hr$

➙$\underline \mathbb{ANSWER:-}$

$\\ \\ \implies \boxed{ \:Speed = 6 \: km/hr}$

Answer 2

800m/8min=100m/min

100m/min×60min/1000m=6km/h