Question 1083145
the amount of time will be t and a-t, both in hours.  They add to a.
bt=distance on bicycle
c(a-t)=ca-ct=distance walking
ca-ct=bt if walking and riding cover the same distance
ca=bt+ct
ca=t(b+c)
t=ca/(b+c)
bicycle d=bca/(b+c)
walking distance is c(a-t)=ca-ct.There are many other ways to practice solving for any one of these variables in terms of the others.