Question

f) Riya takes 400 seconds from her house to reach her school on a bicycle. If her
bicycle has the
speed of 3 m/s, calculate the distance between her house and school. (2m)​

Answer 1

Answer:

1???????? i can't understand

Answer 2

Answer:

Since the units in the question and choices are different, we have to equalize them.

speed of Riaz  v=3m/s

Step 1 :

Time taken t=20 min=20 × 60=1200 s

Step 2 :

Distance covered d=v×t=3×1200=36000 m  

Since we know, 1000 m=1 km

⟹ d=  

1000

36000

​  

=3.6 km

Explanation: