Question

(12) A bus travelling at 42 km/h covers a distance in 5 h. How mu
increased its speed by 8 km/h?
13. A girl walks 12 km at the speed of 3 km/h. What change should she make in her speed to
take (1) an hour less and (ii) an hour more to cover the distance?
14. A motorcyclist travels at 30 km/h and stops for half an hour at the end of every 75 km. How​

Answer 1

Answer:

speed of bus =43km/h

time taken to cover distance =5h

speed•time =distance

42•5=210km

now speed increased by 8km/h

speed=50

distance=210km

time taken=distance/time

time taken =210/50

time take=4.01hours