Let:
v = Olga's speed
t = the time Anna spent going to school (3 km/hour)
t/2 = the time Anna spent running back home with speed of 6 km/hour
So, t + t/2 = 3t/2 is the total time
In the meantime distance = speed*time and the both made the same distance we can put it as:
3t + 6*(t/2) = (3t/2)*v
6t = (3/2)tv divide both sides by t
(3/2)v = 6
v = 2*6/3
v = 4 km/hour
Olga's speed was 4 km/hour.
Hey there!
24 tenths is 240
3 tenths is 30
1 one= 1
240-1=239
239-30=
209
Hope it helps!
1. 90°
2. 5.74
3. 90°
4. 7
:))
Answer:2x-14. Explanation: distribute 2 to both terms
3x4=5x-10
12=5x-10
22=5x
x=4.4
