Answer:
53 1/3 km/h
Step-by-step explanation:
average speed = (total distance)/(total time)
average speed = distance/time
time * average speed = distance
time = distance/(average speed)
250 km at 75 km/h
distance = 250 km
time = (250 km)/(75 km/h) = 3.33333... hours
350 km at 70 km/h
distance = 350 km
time = (350 km)/(70 km/h) = 5 hours
200 km at 30 km/h
distance = 200 km
time = (200 km)/(30 km/h) = 6.6666... hour
total distance = 250 km + 350 km + 200 km = 800 km
total time = 3.33333... hours + 5 hours + 6.66666... hours = 15 hours
average speed = (total distance)/(total time)
average speed = (800 km)/(15 hours)
average speed = 53 1/3 km/h
Answer:
Pace per mile
12 : 00
min : sec
Speed 0.0833 miles per minute=5 miles per hour
Step-by-step explanation:
THE NUMBER OF ...???
whaats the rest
Answer:
25 extra litres
Step-by-step explanation:
Ratio 2:3
2+3=5 so 35/5 =7
7x2 means she used 14 litres of fruit juice
7x3 means she used 21 litres of lemonade
if she has 10 litres of fruit juice left then she can use 10/2=5 5x3=15 15 litres of lemonade
10+15=25 so she can make 25 extra litres
