Question

Vasundra reach school on cycle in 20 mi n at the average of 18km per hour if she wants to reach school in 15 min what should be her average speed????????

Answer 1

Answer:

24 km/h

Step-by-step explanation:

distance from school

=18 × 20/60

=6 km

speed = distance/time

=6/0.25

=24 km/h

Answer 2

$average \: speed = 18km \: per \: hour \\ in \: one \: min \: she \: travels = 30m \\ so \: in \: 15 \: min \: she \: travels \: at \: the \: average \: speed \: of \: 4.5m \: per \: sec$