Jane and sali cucled along the same 63 km 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 both cycled 30km jane and sali both cycled at constant speeds. work out the speed in m/s

We know that

speed=distance/time
Jane speed is > 63 km/3.5 hours> 18 Km/hours

1 Km is equals to> 1000 m
1 hour is equals to> 3600 sec
so
18 Km/hour> 18*1000/3600> 5 m/sec

for distance =30 Km
 Jane s time=?
time=distance/speed> time=30000/5> time=6000 sec> 100 min

the time it took Sali to reach 30 km was> 100 min-4 min---> 96 min
Sali speed is---> 30000/96 min--> 312.5 m/min> 312.5/60---> 5.21 m/sec

the answer is
Jane speed is 5 m/sec
Sali speed is 5.21 m/sec

The answer is a good luck

i = 2 / - 5

step-by-step explanation:

evaluation of ( 2 - 4 ) ( p + q ) when p = 2 and q = 5 i, by putting values of p and q,                                                                    

0 = ( 2 - 4 ) ( p + q )0 = ( 2 - 4 ) ( 2 + 5 i ),   by multiplying these0 = ( 4 + 10 i - 8 - 20 i )0 = 4 - 8 + 10 i - 20 i0 = - 4 -10 i   0 = 2 ( - 2 - 5 i )0 / 2 = - 2 - 5 i- 2 - 5 i = 0- 5 i = 2i = 2 / - 5