Question

A cyclist covers a distance of 15 miles in 2 hours.Calculate his speed.

Answer 1

12.07 KMPH

in si units 15 mile = 24.14 km

speed=dist.travelled/time taken

therefore speed= 24.14/2=12.07

Answer 2

Given :-

• Distance = 15 miles
• Time = 2 hours

To find :-

• Speed = ?

Solution :-

➣ Firstly, convert the distance from miles into km :-

• Divide the given value by 5.
• Multiply it by 8.

Distance = 15 miles

$\mapsto$ $\sf\dfrac{15}{5}$

$\mapsto$ 3

$\mapsto$ $\sf{3 \times 8}$

$\mapsto$ $\sf{24~km}$

• Distance = 24 km

Formula to calculate speed :-

$\sf\boxed{Speed~=~\dfrac{Distance}{Time}}$

Put the given values :-

$\mapsto$ $\sf\dfrac{24}{2}$

$\mapsto$ $\sf{12}$

• Speed = 12 km/hr

━━━━━━━━━━━

Know more :-

• Distance is the path travelled by an object in unit time.
• It is a scalar quantity.
• Its unit is m, km.
• $\sf\boxed{Distance~=~Speed \times Time}$