Question

a man travelled one forth of the distance by taxy, three fifth by train and one eighth by bus and the remaining 8 km on foot.what is the lenth of total journy ?

Answer 1

let x is total distance
x-(x/4+3x/5+x/8)=8
x-(10x+24x+5x/40)=8
x-39x/40=8
40x-39x/40=8
x/40=8
x=40×8
x=320 km