Question

jane and sali cycled along the same 63km route.
jane took 3.5 hours to cycle the 63km
sali started to cycle 4 minutes after jane started to cycle.
sali caught up with jane when they had both cycled 30km
jane and sali both cycled at constant speeds
work out sali's speed in km/h

Answer 1

Answer:

Sali's speed is 18.75 kmph.

Step-by-step explanation:

Let the speed of Sali be x kmph.

Total distance is 63 km

The speed of Jane is (63÷3.5)=18kmph

Jane covers 30km in 1 hour and 40 minutes.

Because t=s/v

Or, t= 30/18=1⅔

Now,Sali covers that 30 km 4 mins less than Jane. So her time will be 1 hour and 36 minutes =96 minutes= 96/60 hours.

Hence Sali's speed is ={30÷(96/60)} kmph.

=18.75 kmph.

.

.

.

Hope it will help you.

Mark me as brainliest ❤️.

Do follow me please.

Answer 2

Answer:

18.75 kmph

Step-by-step explanation:

Total distance is 63 km

Jane: (63 / 3.5) = 18kmph

Jane covers 30km in 1 hour and 40 minutes.

t=s/v

t = 30/18 = 1⅔

1 hour and 36 minutes = 96 minutes = 96/60 hours.

= (30÷(96/60)) kmph

= 18.75 kmph