Question

4. Mr. Amit can walk 8 km in 1 hour 20 minutes.
(a) How far does he go in :
() 10 minutes?
(*) 30 seconds?
(b) How long will it take him to walk :
(1) 2500 m?
(1) 6-5 km?​

Answer 1

Step-by-step explanation:

Dist. Travel in 1hr 20 min=8km

Time for 1km=1hr 20 min =80min/8km=10 min

(I) going in 10 min=1 km

(ii) 1 km=1000m, 1min= 60 sec

10 min=10min×60 sec= 600 sec

1 sec = 1000 m/600 sec

30 sec = 1000/600×30 = 50 m

(b) (I) acc. to 1st condition he was walking 1000 m in 10 min.

Then 1 min =?

1000/10 = 100 sec

Then 2500 m =

1 mtr = 10/1000×2500= 25 min

(ii) 1 km = 1000 m

6.5 km =?

6.5 km×10 min= 65 min