Assuming the walking speed is X, the cycling speed is 8+X and the car speed is 24+X.
4/x+ 10/(24+x)= 14/(8+x)
solve
X=6
A: The walking speed is 6 kilometers per hour.
2. Party A and Party B can complete a project in 36 days, with 45 days for Party A and 60 days for Party B and Party C. How many days does it take each person to complete it alone?
Set a to sit alone for x days and complete b, y, c and z days.
1/X+ 1/Y= 1/36
1/Y+ 1/Z= 1/60
1/X+ 1/Z= 1/45
solve
X=60
Y=90
Z= 180
Answer: It takes 60 90 180 days for one person to do it.
3. Given the radical positive number of x+a=- 1 in x-2, what is the value range of A?
(x+a)/(x-2)=- 1
x+a=2-x
2x=2 amps
x = 1-a/2 & gt; 0
a/2 & lt; 1
a & lt2