Sagot :
1.50km
2.270km
3.4.05km
4.434km
5.5.4km
calculate time
6.4.5h
7.3.5h
8.5.333h
calculate speed
9.25km/h
10.5km/h
explanation
1.Distance=SpeedxTime
or D=ST
Given:
D=?
S=25km/hr
T=2hours
D=25(2)
D=50km/h
3.1 1/2 hour us (60+30)=90 minutes
D=ST
D=45(90)=4050
1m=1000km
4050/1000=4.05 km/h
5.1/2 hour=60 minutes
GiVen=
d=?
s=90km/h
t=1/2h
d=st
d=90(60)=5400
1m=1000km
5400/1000km=5.4km/h
TIME
1.t=d/s
given:
d=90km
s=20km/h
t=?
t=90/20
t=4.5 or 4 1/2 hour
SPEED
s=d/t
s=200/8
s=25km/h