Question

rashmi goes to school at 4 km/h in 2h 30min. how much time will she take to cover the distance if she cycles at 12 km/h?​

Answer 1

Answer:

40 km

Step-by-step explanation:

2 30/60

= 5/2

= 12 km/h + 4km/h

= 16 km/h

Therefore,

Distance = Speed ×Time

= 5/2 × 16

= 40 km

Answer 2

Answer:

7h 30min

Step-by-step explanation:

4km/h = (4×1000)÷3600=1.111 m/s

2h 30min = (2×3600)+(30×60)=9000sec

12km/h = (12×1000)÷3600= 3.333m/s

if rashmi reach at 1.111m/s in 9000sec

then at 3.333m/s in (9000÷1.111)×3.333=27000sec

and 27000sec= 27000÷3600 = 7.5hrs = 7h 30min