Question 1038787

B travels from home to school at 6km/h and returns same route at 8km/h in 70 minutes for entire joruney. What is the distance of school

A man travels certain distance at 30km/h and returns same route at 50kmh\.h and takes 5 hours for entire journey what is the total distance
<pre>Let distance be D
Then time taken to travel from home to school = {{{D/6}}}, and time taken on return trip = {{{D/8}}}
We then get the following TIME equation: {{{D/6 + D/8 = 70/60}}}________{{{D/6 + D/8 = 7/6}}}
4D + 3D = 28 ------- Multiplying by LCD, 24
7D = 28
D, or distance = {{{28/7}}}, or {{{highlight_green(matrix(1,2, 4, km))}}}

One (1) question per post. Hint: 2nd is done the same way as the 1st. Good practice for you, I'm sure.