posted by kennard .
The distance between 2 town x and y, is 50km.alan drive from x to y at an average speed of vkm/ h.
Write down an expression,in term of v,for the time in hour, that he took to complete the journey from x to y.
Write down an expression in term of v,for the time in hour,if the speed is 5 km/h greater
Given that the return journey is 20 minute lesser then the first. Form an equation to show that it simpliflied to v2+5v-750=0