Question

A tortoise moves a distance of 100 m in 15 minutes. What is its average speed in km/hr?​

Answer 1

Answer:

v=d/t

v= 100/900 ( 1 min is 60 sec)

0.1 m/sec

convert to km/hr

0.1*18/5

=0.36km/hr

Answer 2

Answer :

➥ The average speed of tortoise = 0.396 km/hr

Given :

➤ Distance covered by tortoise = 100 m

➤ Time taken by tortoise = 15 min

To Find :

➤ Average speed of tortoise = ?

Solution :

◈ Time taken = 15 min = 15 × 60 = 900 sec

As we know that

$\tt{:\implies Average \: speed = \dfrac{Total \: distance}{Total \: time}}$

$\tt{:\implies Average \: speed = \cancel{\dfrac{100}{900}}}$

$\bf{:\implies Average \: speed = 0.11 \: m/s}$

Convert into km/hr :

$\tt{:\implies Average \: speed = 0.11 \times \dfrac{18}{5} }$

$\bf{:\implies \underline{ \: \: \underline{ \purple{ \: \: Average \: speed = 0.396 \: km/hr \: \: }} \: \: }}$

Hence, the average speed of tortoise is 0.396 km/hr.